Postpublished at 15 mins
Barnet 0-0 Brentford
After 15 minutes, both sides have had 50% possession but Barnet have yet to register a shot while Brentford have had four.
In-play clips of Barnet v Brentford available to UK users only
Coulthirst scores twice for Barnet after Watkins' opener for Brentford
Watkins goes down despite little sign of contact, Maupay scores from spot
Canos restores Brentford lead before sub Sparkes curls in superb free-kick
Winner goes to Swansea in fifth round
Neil Johnston
Barnet 0-0 Brentford
After 15 minutes, both sides have had 50% possession but Barnet have yet to register a shot while Brentford have had four.
Barnet 0-0 Brentford
Steve Claridge
Ex-Premier League striker on BBC Radio 5 live
Brentford have ridden the early Barnet storm and have settled into the game now.
Barnet 0-0 Brentford
Despite Yoann Barbet going so close to giving Brentford the lead, Darren Currie will be happy with this start.
His side has survived the opening 10 minutes without any damage and are standing toe-to-toe with their opponents from three leagues higher.
Barnet 0-0 Brentford
Jonathan Pearce
BBC Radio 5 live commentator
I had a bit of a nightmare, I took the wrong way to get to the ground, through Kenton and Harrow in north London.
Barnet 0-0 Brentford
Terrific stuff from Brentford's Yoann Barbet who gets away from his market to meet a corner but his headers crashes against a post and is scrambled away.
Cheers from the home side but that was mightily close.
Barnet 0-0 Brentford
Steve Claridge
Ex-Premier League striker on BBC Radio 5 live
There is no fear in the game from Barnet, they are not set up defensively and are going toe-to-toe with Brentford.
Barnet 0-0 Brentford
This is a high-tempo start by the hosts - the last remaining north London team in the FA Cup.
They're dominating possession and Brentford are defending in numbers.
Medy Elito whips in a decent cross but it's plucked out of the air by Luke Daniels.
Barnet 0-0 Brentford
Great start by the non-league side. They win a corner in the first minute but Brentford clear. Cracking atmosphere inside the ground and lots of noise.
Barnet 0-0 Brentford
The Battle of the Bees is under way.
It's bouncing at The Hive - Barnet's neat and tidy ground.
You can see the Wembley Arch in the distance.
So near yet so far away.
Here come the teams.
Barnet v Brentford (19:45 GMT)
As a player, Barnet boss Darren Currie earned himself a reputation for being an exciting winger - as well as a fan of tattoos.
"I've got about 14 but my last one was over 10 years ago," Currie, who uncle is Tony Currie, the former England, Leeds and Sheffield United player.
"I have one on my arm in tribute to my wife, Emma, and children, Charlie and Bella.
"Someone asked me if we beat Brentford would I get the FA Cup tattooed on me? I don't think my wife would appreciate that!"
#bbcfacup
Press Officer Peter: If Brighton face Derby, a repeat of the fifth round in 1946, when FA Cup matches were two-legged affairs - Derby won 4-1 at the Goldstone, and 6-0 in the second leg! Derby WON the cup that year!
Barnet v Brentford (19:45 GMT)
Will Huffer had to do a Google search on Barnet before discovering he was joining a club in the fourth-round of the FA Cup.
"When I found out there was a bit of interest I had a look on Twitter and Google straight away," the 20-year-old keeper, who has joined on loan from Leeds, told the London Evening Standard., external
"I saw they had Brentford on TV on Monday night. I had no idea. Then I saw they had beaten Sheffield United at their place in the last round."
Huffer goes straight into the team tonight.
What a story if he can help his new team-mates pull off a famous win.
Barnet v Brentford (19:45 GMT)
Barnet were hammered 4-0 at bottom club Braintree in their last game in the National League. Will they bounce back by causing an FA Cup shock?
Darren Currie takes charge of the non-league club against Brentford - his first match since being appointed permanent head coach.
Currie was in caretaker charge when he guided the non-league Bees to a famous 1-0 win third-round win over Sheffield United.
"Brentford will probably be a harder game than Sheffield United because they will be very mindful of what we did at Bramall Lane," said Currie.
Barnet v Brentford (19:45 GMT)
Brentford make five changes from the team that won 4-2 at Rotherham in their previous game.
Luke Daniels replaces Daniel Bentley in goal, Moses Odubajo is in for Henrik Dalsgaard in defence, while Sergi Canos, Josh McEachran and Josh Dasilva are selected in midfield.
The Championship club are still without midfielders Emiliano Marcondes (ankle) and Lewis Macleod (hamstring), while defender Chris Mepham completed his £12m switch to Premier League Bournemouth last week.
Brentford XI: Daniels, Konsa, Jeanvier, Barbet, Odubajo, Da Silva, McEachran, Henry, Watkins, Maupay, Canos.
Substitues: Bentley, Sawyers, Benrahma, Dalsgaard, Ogbene, Forss, Sorensen.
Darren Currie makes three changes for his first game as permanent head coach of Barnet.
Will Huffer, recently signed on loan from Leeds, starts in goal in place of the suspended Mark Cousins. Defender David Tutonda and midfielder Wes Fonguck replace Callum Reynolds and Charlee Adams respectively.
Barnet XI: Huffer, Sweeney, Tutonda, Robson, Alexander, Fonguck, Elito, Taylor, Johnson, Coulthirst, Mason-Clark.
Substitutes: Harrison, Sparkes, Matrevics, Boucaud, Smith, Payne, Bettamer.
Barnet v Brentford (19:45 GMT)
More on the fifth round draw later.
Time to build up to the 16th and final tie of the fourth round where the prize for the winners is a trip to Swansea City.
A reminder that there will be no replays in the fifth round - all eight ties will be played to a finish on the day of the game.
If the scores are level after 90 minutes, extra-time and penalties will be used to decide the winner.
All ties will be will take place between 15-18 February.
Anyone else think Chelsea against Manchester United will be a TV game?
Brighton/West Brom v Derby County
Portsmouth/QPR v Watford