Buckie Thistle boss Graeme Stewart tells BBC Scotland: "This has probably been a bit more special than we thought. We never expected to come in with the bus and have a lot of fans clapping us in.
"I have only been to the ground once and it's a lot bigger than I remember. But we're not here just to be tourists. I think the players are really enjoying this occasion, it's special.
"The bus picked us up in Aberdeen and there were a few fans to see us off and I think they were the same people that clapped us off the bus at the ground today. It's been great for the community. It's a great occasion and we are just going to enjoy it.
"We are delighted Celtic aren't knocking about. Probably the strongest team they could've put out. They're not taking this lightly, Celtic have definitely given us the respect.
"The hardest part of being a manager is picking the 11 but you have to do it. We want to stay in the game and make it difficult. We don't want to just sit and defend for 90 minutes and when we can I want us to attack."
By the way, Josh Peters in the Buckie team is the cousin of Celtic centre-back Stephen Welsh, who starts on the bench.
'One in a lifetime game'
Celtic v Buckie Thistle (16:00)
John Hughes
Former Celtic defender on Sportsound
The Buckie players were celebrating rightly so because they got Celtic [in the draw].
It's a one in a lifetime game for them to come and play at Parkhead.
'Special moment'
Celtic v Buckie Thistle (16:00)
Leanne Crichton
Former Scotland international on Sportsound
You can see how much it means to the Buckie players.
This is a moment you need to afford them to acknowledge the fans and get used to the pitch.
The stadium they play in, they're not used to this.
SNSCopyright: SNS
The Buckie King
Celtic v Buckie Thistle (16:30)
Buckie ThistleCopyright: Buckie Thistle
Who expected to see Stephen King in a Buckie Thistle scarf today?
Nah, same.
The fifth-tier side count the world-famous writer among their supporters, and if you click right here you'll find out why.
I'll wait for you to have a gander...
Where actually is Buckie?
Celtic v Buckie Thistle (16:00)
Google MapsCopyright: Google Maps
A wee geography lesson for you...
Buckie is a town of 10,500 people, 50-odd miles east of Inverness and more than 60 miles north of Aberdeen.
A long way from Glasgow whatever way you want to slice it.
The Highland League side travel down in fifth place in the fifth tier of Scottish football.
Celtic are top of the top flight.
Post update
Right, that's enough on Celtic. We know plenty about them.
What about today's Highland League visitors?
Post update
Celtic manager Brendan Rodgers has a 100% win record in Scottish Cup ties.
Unthinkable, I know, but if that ends today we can safely say it'll be one of the biggest cup shocks of all time.
'You have to respect every game'
Celtic V Buckie Thistle (16:00)
Celtic manager Brendan Rodgers tells BBC Scotland: "I think you always have to respect every game you play. We've got to get back to our rhythm and speed as quickly as we can. We've worked very hard over this last period and this is our chance to step into the next round hopefully.
"I've got to say in training the boys have been brilliant. The four games leading into the break were much more like the levels should be and that has continued into training and we want to bring into this game.
"I'm looking for [Odin Holm] to come in and dictate the game. Callum [McGregor] takes a well deserved rest, I tend to give him an extended rest over the period we were off so he can come back ready for us. It's important for Holm to come in and perform how we want and these are the games you need to be able to come in.
"This break is something I had planned for Callum a number of weeks ago, to be responsible and look after himself.
"This is the Scottish cup final for these Buckie players. These are the memories for some of these guys. For us it's really serious for us to get to Hampden at the end of the season."
SNSCopyright: SNS
No McGregor or Carter-Vickers for Celtic
Celtic v Buckie Thistle (16:00)
Brendan Rodgers goes fairly strong with his Celtic side, but there are some notable absentees.
Reo Hatate, Daizen Maeda and Oh Hyeon-gyu are still on international duty, while Callum McGregor gets a break and Cameron Carter-Vickers isn't risked.
Celtic's only new January recruit, Nicolas Kuhn, isn't ready to feature.
Live Reporting
Nick McPheat
All times stated are UK
Post update
A wee reminder: VAR will be in use today.
Please don't let it ruin anything special...
'We're not here just to be tourists'
Celtic v Buckie Thistle (16:00)
Buckie Thistle boss Graeme Stewart tells BBC Scotland: "This has probably been a bit more special than we thought. We never expected to come in with the bus and have a lot of fans clapping us in.
"I have only been to the ground once and it's a lot bigger than I remember. But we're not here just to be tourists. I think the players are really enjoying this occasion, it's special.
"The bus picked us up in Aberdeen and there were a few fans to see us off and I think they were the same people that clapped us off the bus at the ground today. It's been great for the community. It's a great occasion and we are just going to enjoy it.
"We are delighted Celtic aren't knocking about. Probably the strongest team they could've put out. They're not taking this lightly, Celtic have definitely given us the respect.
"The hardest part of being a manager is picking the 11 but you have to do it. We want to stay in the game and make it difficult. We don't want to just sit and defend for 90 minutes and when we can I want us to attack."
Ah, that's nice
Celtic v Buckie Thistle (16:00)
Post update
Ah, finally, the Buckie team...
Buckie Thistle XI: Knight, McHardy, Murray, Barry, Peters, MacAskill, McCabe, Pugh, MacIver, Munro, Wood.
Substitutes: Wood, MacKinnon, Fraser, MacLeod, Storrier, Fyffe, Ramsay, Goodall, Keir.
By the way, Josh Peters in the Buckie team is the cousin of Celtic centre-back Stephen Welsh, who starts on the bench.
'One in a lifetime game'
Celtic v Buckie Thistle (16:00)
John Hughes
Former Celtic defender on Sportsound
The Buckie players were celebrating rightly so because they got Celtic [in the draw].
It's a one in a lifetime game for them to come and play at Parkhead.
'Special moment'
Celtic v Buckie Thistle (16:00)
Leanne Crichton
Former Scotland international on Sportsound
You can see how much it means to the Buckie players.
This is a moment you need to afford them to acknowledge the fans and get used to the pitch.
The stadium they play in, they're not used to this.
The Buckie King
Celtic v Buckie Thistle (16:30)
Who expected to see Stephen King in a Buckie Thistle scarf today?
Nah, same.
The fifth-tier side count the world-famous writer among their supporters, and if you click right here you'll find out why.
I'll wait for you to have a gander...
Where actually is Buckie?
Celtic v Buckie Thistle (16:00)
A wee geography lesson for you...
Buckie is a town of 10,500 people, 50-odd miles east of Inverness and more than 60 miles north of Aberdeen.
A long way from Glasgow whatever way you want to slice it.
The Highland League side travel down in fifth place in the fifth tier of Scottish football.
Celtic are top of the top flight.
Post update
Right, that's enough on Celtic. We know plenty about them.
What about today's Highland League visitors?
Post update
Celtic manager Brendan Rodgers has a 100% win record in Scottish Cup ties.
Unthinkable, I know, but if that ends today we can safely say it'll be one of the biggest cup shocks of all time.
'You have to respect every game'
Celtic V Buckie Thistle (16:00)
Celtic manager Brendan Rodgers tells BBC Scotland: "I think you always have to respect every game you play. We've got to get back to our rhythm and speed as quickly as we can. We've worked very hard over this last period and this is our chance to step into the next round hopefully.
"I've got to say in training the boys have been brilliant. The four games leading into the break were much more like the levels should be and that has continued into training and we want to bring into this game.
"I'm looking for [Odin Holm] to come in and dictate the game. Callum [McGregor] takes a well deserved rest, I tend to give him an extended rest over the period we were off so he can come back ready for us. It's important for Holm to come in and perform how we want and these are the games you need to be able to come in.
"This break is something I had planned for Callum a number of weeks ago, to be responsible and look after himself.
"This is the Scottish cup final for these Buckie players. These are the memories for some of these guys. For us it's really serious for us to get to Hampden at the end of the season."
No McGregor or Carter-Vickers for Celtic
Celtic v Buckie Thistle (16:00)
Brendan Rodgers goes fairly strong with his Celtic side, but there are some notable absentees.
Reo Hatate, Daizen Maeda and Oh Hyeon-gyu are still on international duty, while Callum McGregor gets a break and Cameron Carter-Vickers isn't risked.
Celtic's only new January recruit, Nicolas Kuhn, isn't ready to feature.
Post update
Celtic XI: Hart, A Johnston, Nawrocki, Scales, Taylor, Holm, O'Riley, Bernardo, Abada, Palma, Kyogo.
Substitutes: Bain, Lagerbielke, Turnbull, Bernabei, Vata, Kelly, Ralston, Welsh, M Johnston.
Post update
We'll provide you with the Buckie team when they choose to reveal it.
But for now, here's the Celtic XI...
Celtic on the Buckie
Celtic v Buckie Thistle (16:00)
If your idea of romance is the Scottish Cup, this is the fixture for you.
Fifth-tier Buckie Thistle go to record winners Celtic for the first time as fourth-round weekend comes to an end in Glasgow.
Listen along with Sportsound, we'll take care of the rest...