That's enough from me. Congratulations to Celtic on a job well done. Tougher tests await.
St Johnstone, Motherwell and Aberdeen are all in Europa League action on Thursday. Can they follow Celtic's lead and make progress?
Thanks for your company. There will be all-singing, all-dancing coverage of tomorrow's Commonwealth Games opening ceremony across all BBC outlets. Join us, if you can. You might get more Lulu...
Join the debate at #bbcsportscot
BBC Scotland's Tom English on Twitter: "Attendance estimate 36,000. Not had exact figure yet."
Celtic will be back at Murrayfield for the home leg of the third round qualifier since it will take time to get Celtic Park back to normal after the opening ceremony of the Commonwealth Games.
Post update
More from Celtic boss Ronny Deila
"We need to invest but it needs to be the right players. We will do it our way, like the club has always done. We are working hard on that."
Post update
Celtic manager Ronny Deila on BBC Radio Scotland
"The first half was good, we started well. We created good chances and won the ball back quickly to keep up the pressure. It was a bit sloppy at times in the second half but I have to be happy with the result.
"It's a good start but this is not the best opponent we are going to get."
Post update
Former Scotland striker Billy Dodds on BBC Radio Scotland
"Another creative player and a striker, that'll do nicely for the Celtic fans."
Post update
Fraser Forster wasn't troubled at all tonight. With Southampton sniffing around, can Celtic afford to sell their goalkeeper? He'll be a tough man to replace but if Craig Gordon can rediscover his form of old then maybe it would make sense.
Lukasz Zaluska was on the bench tonight, which might suggest Gordon is not quite there yet after his lengthy lay-off.
Post update
Tom English on BBC Radio Scotland
"I'm a huge Kris Commons fan but there is too much onus on him and I still think Celtic need a poacher up front. It's now a question of ambition. Will they go out and spend the money to make sure of Champions League football? But it's not a new question, Celtic fans have been asking it for a while and I suspect they know the answer."
Post update
Next up for Celtic is either St Patrick's Athletic or Legia Warsaw. That tie is poised at 1-1 ahead of tomorrow's second leg in Dublin.
FULL-TIME
Celtic 4-0 KR Reykjavik (5-0)
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Two goals apiece for Virgil van Dijk and Teemu Pukki on a comfortable evening for Celtic. Two more rounds to negotiate if there is to be Champions League group stage football for a third consecutive season.
Post update
Former Celtic defender Mark Wilson on BBC Radio Scotland
"It's been a thoroughly professional job from Celtic. They came out of the traps quickly and killed the tie off."
Post update
Charlie Mulgrew, captaining Celtic in the absence of the injured Scott Brown, takes aim from 25 yards and Magnusson is right behind it.
Post update
We're into the last few minutes at Murrayfield and the referee is surely going to put KR out of their misery by not adding much in the way of stoppage time.
HITS THE WOODWORK
Here he comes again and this time the post denies Kris Commons as he meets a low cross with a first-time strike. Time is running out for the playmaker to get on the scoresheet.
Post update
It's a bicycle kick from the lively Kris Commons now and it flies high over the crossbar...
Post update
As I was sorting out that picture of Teemu Pukki's fine finish, Kris Commons had a go with a dig from fully 40 yards but his shot drifts over.
Post update
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Here's Teemu Pukki hammering in the fourth goal for Celtic and yes that's the KR goalie behind him after a rash adventure into no man's land. It's not been a great night for Mr Magnusson.
Post update
Callum McGregor wants to get in on the scoring act after his debut goal last week but his lofted effort is gathered comfortably by Magnusson.
SUBSTITUTION
Teemu Pukki gets a huge roar of approval as he trots off to be replaced by Liam Henderson.
GOAL
Celtic 4-0 KR Reykjavik (Pukki)
It's two goals for Teemu Pukki, who bursts past the stranded goalie on the edge of the box, beats a defender, then thrashes the ball home from a tight angle.
Post update
Mikael Lustig gets forward menacingly, with Callum McGregor creating space for the full-back. The Swedish defender drills in a cross, which has goalie Magnusson in trouble, but there are no takers in green and white.
Post update
Celtic break at pace as Teemu Pukki drives at the creaking KR defence but his attempt to slip in Kris Commons is intercepted by the stretched leg of a defender.
Post update
The Celtic fans are entertaining themselves with a few rowdy songs as a very one-sided contest threatens to fall flat.
Post update
Kris Commons is at it again with what BBC Radio Scotland commentator Liam McLeod calls "a left-foot rasper", drawing a fine save from Magnusson, who tips it wide.
SUBSTITUTION
Adam Matthews and Beram Kayal are coming on for Celtic. Emilio Izaguirre and Leigh Griffiths are the men making way.
Post update
Kris Commons fires in a shot that Magnusson fumbles slightly but manages to gather at the second attempt.
Post update
There are still people asking, so I'll repeat that the BBC Radio Scotland commentary is not available online. You can't listen in unless you have a good old fashioned radio, or even a fancy new one - or through your telly, if it's a posh one.
Post update
Leigh Griffiths finds the side-netting with an angled drive as Celtic dominate possession against opponents who are chasing shadows.
Post update
A late challenge from Sigurdsson angers Stefan Johansen. There's a spot of pushing and shoving but tempers are quickly recovered and Latvian referee Andris Treimanis is happy to keep his cards in his pocket.
Post update
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Will we see a few more goal celebrations before full-time? The forwards will surely fancy their chances of getting a few tonight.
KICK-OFF
The game is up and running again...
Post update
No changes for Celtic as the teams emerge for the second half.
Post update
Former Celtic defender Mark Wilson on BBC Radio Scotland
"I'd like to see Tony Watt get a chance to prove what he can do. I was at the club when he was coming through and he was a fantastic talent. He got that famous goal against Barcelona but it all seemed to go wrong for him last season."
Post update
Just a quick reminder that we do not have online rights for the BBC Radio Scotland commentary from Murrayfield. It's on 810MW/DAB for those of you with access to a wireless.
Post update
We haven't seen much from Leigh Griffiths in the first 45 minutes. Is he suited to a role out wide? He's got a fearsome left foot on him when cutting in from the right.
Post update
There's a debate amongst the BBC Radio Scotland team on Murrayfield v Hampden as national stadiums.
The action is at bit far away from the fans at the home of rugby but the new pitch is receiving high praise from the pundits.
Join the debate at #bbcsportscot
Stephen Seggie on Twitter: "Merchant Navy boys in Casablanca crowded round a laptop watching updates on #bbcsportscot only way to do it..."
Dylan Billing on Twitter: "It's great to see Ronnie's point getting across, a big win to boost morale, against teams like this, they should only be big. #bbcsportscot."
HALF-TIME
Celtic 3-0 KR Reykjavik
The tie is as good as over as Celtic lead 4-0 on aggregate. Virgil van Dijk profited from a couple of goalkeeping blunders and Teemu Pukki added the third goal at Murrayfield. It's been a stroll in the park for Ronny Deila's men...
Post update
Stefan Johansen is dictating the pace of play from the middle of the park as he slips a clever pass to Emilio Izaguirre but the marauding full-back's raking delivery cannot find a team-mate.
Post update
Stefan Johansen is next to try his luck for Celtic as a neat passing move ends with the Norwegian midfielder firing just wide of the target.
Post update
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Virgil van Dijk was the early goal hero for Celtic, scoring twice inside the first 20 minutes at Murrayfield.
Post update
Celtic striker Teemu Pukki is in the mood now as he sends a sharp strike flashing narrowly wide.
Join the debate at #bbcsportscot
BBC Scotland's Tom English on Twitter: "I know the opposition is dreadful but Callum McGregor looks a really exciting player. Hungry for the ball. Bright as a button."
Join the debate at #bbcsportscot
John McEnerney on Twitter: "#bbcsportscot no chance for KR now, tidy finishing from VvD. Now let's tune the engine big time & work out some of the kinks! Hail hail..."
Bubblehead on Twitter: "Glued to my phone watching the updates of the Celtic game. Only way to do it whilst living in virginia beach #bbcsportscot"
I'm not sure where Virginia Beach is (Virginia?) but it can't be as warm as Glasgow was this afternoon. A sweltering 24C...
Post update
Kris Commons sets his sights for a long-range strike and Magnusson needs to make another smart save.
Post update
Callum McGregor gets forward again and there is Teemu Pukki waiting for a carbon copy of his goal from a few minutes ago but his team-mate can't pick him out this time.
GOAL
Celtic 3-0 KR Reykjavik (Pukki)
Callum McGregor speeds forward and cuts the ball back perfectly for Teemu Pukki to slam it home. It's three and easy for Celtic now...
Join the debate at #bbcsportscot
Andrew Priestley on Twitter: "Although it is ludicrous that Celtic have to go through so many qualifying rounds, this is very good competitive game practice #bbcsportscot"
Paul Finnigan on Twitter: "Lying by the pool here in Las Vegas reading #bbcsportscot to keep up with the celtic game c 'mon the tic."
Post update
KR keeper Magnusson goes some way to redeeming himself with a smart save to touch away a fizzing effort from Teemu Pukki.
GOAL
Celtic 2-0 KR Reykjavik (Van Dijk)
Defender Virgil van Dijk has a second goal and again it's down to some calamitous goalkeeping. Magnusson misses a nod across goal from Mikael Lustig from a Kris Commons corner and the Dutchman is in the right place for another close-range finish - this time with his head.
Post update
Some slack Celtic defending presents Kjartan Finnbogason with an opening but his effort is easily gathered by keeper Fraser Forster. The 27-year-old was with Celtic as a youth but could not break through.
GOAL
Celtic 1-0 KR Reykjavik (Van Dijk)
Kris Commons floats in a corner and the keeper has a swing and a miss at it, allowing Charlie Mulgrew to nod the ball down and Virgil van Dijk is on hand to nudge the ball in from close range.
Post update
Celtic are hogging the ball, with Stefan Johansen and Kris Commons prompting from midfield as the hosts seek an opening.
Join the debate at #bbcsportscot
Toniwater on Twitter: "#bbcsportscot KR showed they can take wave after wave of pressure 4 80mins but The Tic need 2 see them off well before that! Mon The Hoops!"
BBC Scotland's Tom English on Twitter: "Pukki one-on-one. Straight at keeper. Big night for Pukki. Poor start."
Post update
Kris Commons drives forward and sticks a sweet pass in front of Teemu Pukki but the Celtic striker can't get his shot past goalkeeper Magnusson. The loose ball falls to Leigh Griffiths and his strike draws another good stop from the veteran keeper.
Post update
Kris Commons delivers an inviting ball into the opposition penalty box but Efe Ambrose makes a mess of his header, clearing the danger for KR instead of putting them under pressure.
Post update
If you're saying Gary Martin doesn't sound very Icelandic, then you're right. The 23-year-old KR striker is a former Middlesbrough trainee.
Post update
An early scare for Celtic as Gary Martin's shot takes a deflection off Efe Ambrose and thuds against the post. An offside flag was fluttering first, though...
KICK-OFF
We're off at Murrayfield, with 'You'll Never Walk Alone' being belted out by the Celtic fans.
Post update
St Patrick's Athletic or Legia Warsaw lie in wait for the winners in the next round. The Irish side earned a surprise 1-1 draw in Poland and those two meet in Dublin tomorrow night.
To reach the group stage, as Celtic have done for the past two seasons, they would need to then go on and win a third qualifier. A system, Ronny Deila said was "stupid", arguing that the club's achievements in Europe should outweigh Scotland's coefficient with Uefa.
Post update
It should be a comfortable night's work for Celtic but fans should not be too complacent. Stjarnan, one place above KR in the league, held Motherwell to a 2-2 draw at Fir Park last week and the Steelmen were Scotland's second best side last season, albeit finishing quite a distance behind Celtic.
Join the debate at #bbcsportscot
John McEnerney on Twitter: "#bbcsportscot The Hoops need 2 get KR on the backfoot right from the off & put the tie beyond doubt before HT otherwise it could be nervy!"
BBC Scotland's Tom English on Twitter: "Lulu speaking to the intrepid Frank Henry on Radio Scotland. 'What a thrill,' says Lulu."
Post update
Lulu is on Sportsound. I repeat Lulu is on Sportsound! The singing sensation is in town for the Commonwealth Games party and is tipping Glasgow to put on a great show. She's having a right old laugh with BBC presenter Clare Balding but neither can cast much light on Celtic's prospects...
Post update
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KR Reykjavík are 12 games into their domestic campaign but didn't look too hot in the first leg. Manager Runar Kristinsson is planning another cagey approach, despite trailing.
"We'll try to put up some strategy to slow them down," he said. "Then, when we get a chance to attack we'll do that. That's the only way for us to get further in the competition, we need to score.
"But we're not rushing forward in the beginning, we need to start slowly and slow down the tempo a bit. We have to make sure we get good counters in."
Post update
While I'm typing away here in the bunker, there are hundreds of people outside enjoying the late evening sunshine and Simple Minds playing outside BBC Scotland HQ here in Glasgow as the One Show rolls into town for the Commonwealth Games bonanza.
Jim Kerr and Charlie Burchill are both big Celtic fans and I noticed a seaplane on the River Clyde. Are they planning on a quick sprint across the country in time for kick off? I'm not sure the Water of Leith is wide enough to land in, though...
Post update
BBC Radio Scotland are providing live coverage from Murrayfield. However, we do not have online rights for the game. So, if you can't get your hands on a wireless or you're not resident in the UK, it looks like you are stuck with me.
Join the debate at #bbcsportscot
BBC Scotland's Tom English on Twitter: "Murrayfield kicks Hampden's arse, no doubt about it."
He adds: "Pitch is magnificent. Running track has gone. Not before time."
Post update
We're used to a different type of posts at Murrayfield but the 67,000-capacity ground has staged European football before, with Hearts playing there between 2004 and 2006 when their Tynecastle pitch was deemed too small for Uefa club competition.
Post update
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Celtic Park is playing host to the Commonwealth Games' opening jamboree tomorrow evening, so tonight's second leg is being played at Murrayfield Stadium. The pitch at the home of Scottish rugby was utterly wrecked last season by dastardly nematodes. Ground staff even tried spraying the grass with garlic in a bid to eradicate the turf parasites but to no avail. It just made the worms that bit tastier for Edinburgh's birdlife.
A new blend of grass and synthetic fibres has been installed, with Celtic boss Ronny Deila describing the surface as "perfect".
Celtic lead 1-0 from the first leg in Iceland, thanks to Callum McGregor's late debut goal. The margin of victory really should have been greater, with Kris Commons and Leigh Griffiths thundering shots against the crossbar and Stefan Magnusson making a few decent saves to thwart the visitors.
Post update
Good evening and welcome to our coverage of Celtic's second round Champions League qualifier against KR Reykjavík.
Live Reporting
Colin Moffat
All times stated are UK
Get involved
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Latest PostPost update
That's enough from me. Congratulations to Celtic on a job well done. Tougher tests await.
St Johnstone, Motherwell and Aberdeen are all in Europa League action on Thursday. Can they follow Celtic's lead and make progress?
Thanks for your company. There will be all-singing, all-dancing coverage of tomorrow's Commonwealth Games opening ceremony across all BBC outlets. Join us, if you can. You might get more Lulu...
Join the debate at #bbcsportscot
BBC Scotland's Tom English on Twitter: "Attendance estimate 36,000. Not had exact figure yet."
Celtic will be back at Murrayfield for the home leg of the third round qualifier since it will take time to get Celtic Park back to normal after the opening ceremony of the Commonwealth Games.
Post update
More from Celtic boss Ronny Deila
"We need to invest but it needs to be the right players. We will do it our way, like the club has always done. We are working hard on that."
Post update
Celtic manager Ronny Deila on BBC Radio Scotland
"The first half was good, we started well. We created good chances and won the ball back quickly to keep up the pressure. It was a bit sloppy at times in the second half but I have to be happy with the result.
"It's a good start but this is not the best opponent we are going to get."
Post update
Former Scotland striker Billy Dodds on BBC Radio Scotland
"Another creative player and a striker, that'll do nicely for the Celtic fans."
Post update
Fraser Forster wasn't troubled at all tonight. With Southampton sniffing around, can Celtic afford to sell their goalkeeper? He'll be a tough man to replace but if Craig Gordon can rediscover his form of old then maybe it would make sense.
Lukasz Zaluska was on the bench tonight, which might suggest Gordon is not quite there yet after his lengthy lay-off.
Post update
Tom English on BBC Radio Scotland
"I'm a huge Kris Commons fan but there is too much onus on him and I still think Celtic need a poacher up front. It's now a question of ambition. Will they go out and spend the money to make sure of Champions League football? But it's not a new question, Celtic fans have been asking it for a while and I suspect they know the answer."
Post update
Next up for Celtic is either St Patrick's Athletic or Legia Warsaw. That tie is poised at 1-1 ahead of tomorrow's second leg in Dublin.
FULL-TIME
Celtic 4-0 KR Reykjavik (5-0)
Two goals apiece for Virgil van Dijk and Teemu Pukki on a comfortable evening for Celtic. Two more rounds to negotiate if there is to be Champions League group stage football for a third consecutive season.
Post update
Former Celtic defender Mark Wilson on BBC Radio Scotland
"It's been a thoroughly professional job from Celtic. They came out of the traps quickly and killed the tie off."
Post update
Charlie Mulgrew, captaining Celtic in the absence of the injured Scott Brown, takes aim from 25 yards and Magnusson is right behind it.
Post update
We're into the last few minutes at Murrayfield and the referee is surely going to put KR out of their misery by not adding much in the way of stoppage time.
HITS THE WOODWORK
Here he comes again and this time the post denies Kris Commons as he meets a low cross with a first-time strike. Time is running out for the playmaker to get on the scoresheet.
Post update
It's a bicycle kick from the lively Kris Commons now and it flies high over the crossbar...
Post update
As I was sorting out that picture of Teemu Pukki's fine finish, Kris Commons had a go with a dig from fully 40 yards but his shot drifts over.
Post update
Here's Teemu Pukki hammering in the fourth goal for Celtic and yes that's the KR goalie behind him after a rash adventure into no man's land. It's not been a great night for Mr Magnusson.
Post update
Callum McGregor wants to get in on the scoring act after his debut goal last week but his lofted effort is gathered comfortably by Magnusson.
SUBSTITUTION
Teemu Pukki gets a huge roar of approval as he trots off to be replaced by Liam Henderson.
GOAL
Celtic 4-0 KR Reykjavik (Pukki)
It's two goals for Teemu Pukki, who bursts past the stranded goalie on the edge of the box, beats a defender, then thrashes the ball home from a tight angle.
Post update
Mikael Lustig gets forward menacingly, with Callum McGregor creating space for the full-back. The Swedish defender drills in a cross, which has goalie Magnusson in trouble, but there are no takers in green and white.
Post update
Celtic break at pace as Teemu Pukki drives at the creaking KR defence but his attempt to slip in Kris Commons is intercepted by the stretched leg of a defender.
Post update
The Celtic fans are entertaining themselves with a few rowdy songs as a very one-sided contest threatens to fall flat.
Post update
Kris Commons is at it again with what BBC Radio Scotland commentator Liam McLeod calls "a left-foot rasper", drawing a fine save from Magnusson, who tips it wide.
SUBSTITUTION
Adam Matthews and Beram Kayal are coming on for Celtic. Emilio Izaguirre and Leigh Griffiths are the men making way.
Post update
Kris Commons fires in a shot that Magnusson fumbles slightly but manages to gather at the second attempt.
Post update
There are still people asking, so I'll repeat that the BBC Radio Scotland commentary is not available online. You can't listen in unless you have a good old fashioned radio, or even a fancy new one - or through your telly, if it's a posh one.
Post update
Leigh Griffiths finds the side-netting with an angled drive as Celtic dominate possession against opponents who are chasing shadows.
Post update
A late challenge from Sigurdsson angers Stefan Johansen. There's a spot of pushing and shoving but tempers are quickly recovered and Latvian referee Andris Treimanis is happy to keep his cards in his pocket.
Post update
Will we see a few more goal celebrations before full-time? The forwards will surely fancy their chances of getting a few tonight.
KICK-OFF
The game is up and running again...
Post update
No changes for Celtic as the teams emerge for the second half.
Post update
Former Celtic defender Mark Wilson on BBC Radio Scotland
"I'd like to see Tony Watt get a chance to prove what he can do. I was at the club when he was coming through and he was a fantastic talent. He got that famous goal against Barcelona but it all seemed to go wrong for him last season."
Post update
Just a quick reminder that we do not have online rights for the BBC Radio Scotland commentary from Murrayfield. It's on 810MW/DAB for those of you with access to a wireless.
Post update
We haven't seen much from Leigh Griffiths in the first 45 minutes. Is he suited to a role out wide? He's got a fearsome left foot on him when cutting in from the right.
Post update
There's a debate amongst the BBC Radio Scotland team on Murrayfield v Hampden as national stadiums.
The action is at bit far away from the fans at the home of rugby but the new pitch is receiving high praise from the pundits.
Join the debate at #bbcsportscot
Stephen Seggie on Twitter: "Merchant Navy boys in Casablanca crowded round a laptop watching updates on #bbcsportscot only way to do it..."
Dylan Billing on Twitter: "It's great to see Ronnie's point getting across, a big win to boost morale, against teams like this, they should only be big. #bbcsportscot."
HALF-TIME
Celtic 3-0 KR Reykjavik
The tie is as good as over as Celtic lead 4-0 on aggregate. Virgil van Dijk profited from a couple of goalkeeping blunders and Teemu Pukki added the third goal at Murrayfield. It's been a stroll in the park for Ronny Deila's men...
Post update
Stefan Johansen is dictating the pace of play from the middle of the park as he slips a clever pass to Emilio Izaguirre but the marauding full-back's raking delivery cannot find a team-mate.
Post update
Stefan Johansen is next to try his luck for Celtic as a neat passing move ends with the Norwegian midfielder firing just wide of the target.
Post update
Virgil van Dijk was the early goal hero for Celtic, scoring twice inside the first 20 minutes at Murrayfield.
Post update
Celtic striker Teemu Pukki is in the mood now as he sends a sharp strike flashing narrowly wide.
Join the debate at #bbcsportscot
BBC Scotland's Tom English on Twitter: "I know the opposition is dreadful but Callum McGregor looks a really exciting player. Hungry for the ball. Bright as a button."
Join the debate at #bbcsportscot
John McEnerney on Twitter: "#bbcsportscot no chance for KR now, tidy finishing from VvD. Now let's tune the engine big time & work out some of the kinks! Hail hail..."
Bubblehead on Twitter: "Glued to my phone watching the updates of the Celtic game. Only way to do it whilst living in virginia beach #bbcsportscot"
I'm not sure where Virginia Beach is (Virginia?) but it can't be as warm as Glasgow was this afternoon. A sweltering 24C...
Post update
Kris Commons sets his sights for a long-range strike and Magnusson needs to make another smart save.
Post update
Callum McGregor gets forward again and there is Teemu Pukki waiting for a carbon copy of his goal from a few minutes ago but his team-mate can't pick him out this time.
GOAL
Celtic 3-0 KR Reykjavik (Pukki)
Callum McGregor speeds forward and cuts the ball back perfectly for Teemu Pukki to slam it home. It's three and easy for Celtic now...
Join the debate at #bbcsportscot
Andrew Priestley on Twitter: "Although it is ludicrous that Celtic have to go through so many qualifying rounds, this is very good competitive game practice #bbcsportscot"
Paul Finnigan on Twitter: "Lying by the pool here in Las Vegas reading #bbcsportscot to keep up with the celtic game c 'mon the tic."
Post update
KR keeper Magnusson goes some way to redeeming himself with a smart save to touch away a fizzing effort from Teemu Pukki.
GOAL
Celtic 2-0 KR Reykjavik (Van Dijk)
Defender Virgil van Dijk has a second goal and again it's down to some calamitous goalkeeping. Magnusson misses a nod across goal from Mikael Lustig from a Kris Commons corner and the Dutchman is in the right place for another close-range finish - this time with his head.
Post update
Some slack Celtic defending presents Kjartan Finnbogason with an opening but his effort is easily gathered by keeper Fraser Forster. The 27-year-old was with Celtic as a youth but could not break through.
GOAL
Celtic 1-0 KR Reykjavik (Van Dijk)
Kris Commons floats in a corner and the keeper has a swing and a miss at it, allowing Charlie Mulgrew to nod the ball down and Virgil van Dijk is on hand to nudge the ball in from close range.
Post update
Celtic are hogging the ball, with Stefan Johansen and Kris Commons prompting from midfield as the hosts seek an opening.
Join the debate at #bbcsportscot
Toniwater on Twitter: "#bbcsportscot KR showed they can take wave after wave of pressure 4 80mins but The Tic need 2 see them off well before that! Mon The Hoops!"
BBC Scotland's Tom English on Twitter: "Pukki one-on-one. Straight at keeper. Big night for Pukki. Poor start."
Post update
Kris Commons drives forward and sticks a sweet pass in front of Teemu Pukki but the Celtic striker can't get his shot past goalkeeper Magnusson. The loose ball falls to Leigh Griffiths and his strike draws another good stop from the veteran keeper.
Post update
Kris Commons delivers an inviting ball into the opposition penalty box but Efe Ambrose makes a mess of his header, clearing the danger for KR instead of putting them under pressure.
Post update
If you're saying Gary Martin doesn't sound very Icelandic, then you're right. The 23-year-old KR striker is a former Middlesbrough trainee.
Post update
An early scare for Celtic as Gary Martin's shot takes a deflection off Efe Ambrose and thuds against the post. An offside flag was fluttering first, though...
KICK-OFF
We're off at Murrayfield, with 'You'll Never Walk Alone' being belted out by the Celtic fans.
Post update
St Patrick's Athletic or Legia Warsaw lie in wait for the winners in the next round. The Irish side earned a surprise 1-1 draw in Poland and those two meet in Dublin tomorrow night.
To reach the group stage, as Celtic have done for the past two seasons, they would need to then go on and win a third qualifier. A system, Ronny Deila said was "stupid", arguing that the club's achievements in Europe should outweigh Scotland's coefficient with Uefa.
Post update
It should be a comfortable night's work for Celtic but fans should not be too complacent. Stjarnan, one place above KR in the league, held Motherwell to a 2-2 draw at Fir Park last week and the Steelmen were Scotland's second best side last season, albeit finishing quite a distance behind Celtic.
Join the debate at #bbcsportscot
John McEnerney on Twitter: "#bbcsportscot The Hoops need 2 get KR on the backfoot right from the off & put the tie beyond doubt before HT otherwise it could be nervy!"
BBC Scotland's Tom English on Twitter: "Lulu speaking to the intrepid Frank Henry on Radio Scotland. 'What a thrill,' says Lulu."
Post update
Lulu is on Sportsound. I repeat Lulu is on Sportsound! The singing sensation is in town for the Commonwealth Games party and is tipping Glasgow to put on a great show. She's having a right old laugh with BBC presenter Clare Balding but neither can cast much light on Celtic's prospects...
Post update
KR Reykjavík are 12 games into their domestic campaign but didn't look too hot in the first leg. Manager Runar Kristinsson is planning another cagey approach, despite trailing.
"We'll try to put up some strategy to slow them down," he said. "Then, when we get a chance to attack we'll do that. That's the only way for us to get further in the competition, we need to score.
"But we're not rushing forward in the beginning, we need to start slowly and slow down the tempo a bit. We have to make sure we get good counters in."
Post update
While I'm typing away here in the bunker, there are hundreds of people outside enjoying the late evening sunshine and Simple Minds playing outside BBC Scotland HQ here in Glasgow as the One Show rolls into town for the Commonwealth Games bonanza.
Jim Kerr and Charlie Burchill are both big Celtic fans and I noticed a seaplane on the River Clyde. Are they planning on a quick sprint across the country in time for kick off? I'm not sure the Water of Leith is wide enough to land in, though...
Post update
BBC Radio Scotland are providing live coverage from Murrayfield. However, we do not have online rights for the game. So, if you can't get your hands on a wireless or you're not resident in the UK, it looks like you are stuck with me.
Join the debate at #bbcsportscot
BBC Scotland's Tom English on Twitter: "Murrayfield kicks Hampden's arse, no doubt about it."
He adds: "Pitch is magnificent. Running track has gone. Not before time."
Post update
We're used to a different type of posts at Murrayfield but the 67,000-capacity ground has staged European football before, with Hearts playing there between 2004 and 2006 when their Tynecastle pitch was deemed too small for Uefa club competition.
Post update
Celtic Park is playing host to the Commonwealth Games' opening jamboree tomorrow evening, so tonight's second leg is being played at Murrayfield Stadium. The pitch at the home of Scottish rugby was utterly wrecked last season by dastardly nematodes. Ground staff even tried spraying the grass with garlic in a bid to eradicate the turf parasites but to no avail. It just made the worms that bit tastier for Edinburgh's birdlife.
A new blend of grass and synthetic fibres has been installed, with Celtic boss Ronny Deila describing the surface as "perfect".
LINE-UPS
Celtic: Forster, Lustig, Ambrose, van Dijk, Izaguirre, Griffiths, Johansen, Mulgrew, McGregor, Commons, Pukki. Subs: Zaluska, Matthews, Biton, Boerrigter, Watt, Kayal, Henderson.
KR Reykjavik: Magnusson, Haukur Hauksson, Josepsson, Gretar Sigurdsson, Gunnar Thor Gunnarsson, Finnbogason, Saevarsson, Baldur Sigurdsson, Atlason, Lorenzo, Martin. Subs: Jensson, Egil Jonsson, Ragnarsson, Ormarsson, Gudmundur Gunnarsson, Hroar Sigurdsson, Bjorn Jonsson.
Referee: Andris Treimanis (Latvia)
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Callum McGregor is rewarded with another start tonight, while injured striker Anthony Stokes is replaced by Teemu Pukki.
Fraser Forster, the subject of a failed bid from Southampton, takes up his usual position between the sticks.
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Celtic lead 1-0 from the first leg in Iceland, thanks to Callum McGregor's late debut goal. The margin of victory really should have been greater, with Kris Commons and Leigh Griffiths thundering shots against the crossbar and Stefan Magnusson making a few decent saves to thwart the visitors.
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Good evening and welcome to our coverage of Celtic's second round Champions League qualifier against KR Reykjavík.