Brentford sporting director Mark Warburton admitted boss Uwe Rosler's departure had taken its toll on his squad after watching his men dumped out of the FA Cup on Saturday, writes Jeremy Martin.

Rosler's Griffin Park exit to Championship side Wigan Athletic was confirmed hours before the Bees crashed 3-2 at Carlisle United.

The move, which left assistant boss Alan Kernaghan in temporary charge for the tie, came days after the euphoria of Brentford being granted planning permission for a proposed new stadium in Lionel Road.

The Bees had lacked the intensity of previous weeks in Cumbria and Warburton, who was in the dugout at Brunton Park, admitted Rosler's departure may have played its part.

"The team are taking positives from the situation," he said.

"You don’t lose good people when you are not doing well, but the intensity levels were not there at the start."

Kernaghan made three changes to the side that won 1-0 at Notts County last week, with Jonathon Douglas and David Button rested, while on loan Kadeem Harris was rumoured to have picked up an injury in training.

They were replaced by George Saville, Richard Lee and Marcello Trotta, which led to a quiet first half distinguished by some speculative long range shooting from both sides.

Lee was called upon to make excellent saves from Courtney Meppen-Walter and Sean O’Hanlon, whiled the Cumbrian custodian, Greg Fleming ably kept out Marcello Trotta’s 30 yard pile driver.

The first half appeared to be concluding goalless until James Berrett seized on the Bees failure to clear the ball from their own box and let loose a thunderbolt from the edge of the penalty box giving Lee no chance.

Whatever Kernaghan said at half time certainly revitalised the Bees as they went about their work with a greater commitment, equalizing in the 63rd minute through a Pascal Chimbonda own goal, caused by a low cross into Carlisle's box from from Alan McCormack.

Another failure to clear the ball by Brentford's defence allowed Lee Miller to put Carlisle back in front in the 73rd minute and four minutes later the ever dangerous David Amoo was scythed down by McCormack and Miller put away the resultant penalty.

The Bees threw the proverbial kitchen sink at Carlisle and an otherwise run of the mill match came to life.

McCormack down the right flank was ever dangerous and Adam Forshaw in the middle assisted by substitutes Jake Reeves and Sam Saunders created numerous openings with the third substitute Farid El Alagui finding the net from a delightfully flighted Saunders free kick.

The Bees went into overdrive and piled pressure on to the Carlisle defence, causing some frantic moments for the home fans to endure as the Bees desperately fought for a replay.

The clock won, Carlisle went into the hat for an anticipated lucrative round three tie and Brentford headed back to London to begin the search for a new manager.

Warburton felt the infrastructure of the club could withstand Rosler's exit and that other departures were not necessarily to follow, but warned “everybody has their price”.

The day was overshadowed by Rosler’s departure with much speculation abounding about his successor, early names touted by bookies include Jimmy Floyd Hasselbaink, Ian Holloway and Ole Gunnar Solskjaer.

Brentford: Lee, McCormack, Dean, Craig, Bidwell; Saville (sub Saunders 84), Forshaw, Diagouraga (sub Reeves 59); Donaldson, Trotta (sub El Alagui 68), Grigg.

Subs: Button, Logan, Fillo, Nugent.