Brentford have announced that manager Mark Warburton will leave the club at the end of the season.The Bees are parting company with the man who led them up from Sky Bet League 1 last term and into the promotion race for a place in the Premier League.
Assistant manager David Weir and sporting director Frank McParland will also leave Griffin Park at the end of the current campaign.
The club's owner Matthew Benham said in a statement: "I am a passionate Brentford fan and every decision I take is intended to be in the best long-term interests of the club.
"Some of the decisions taken to date have been easy and some, like this one, have been extremely hard.
"Under Mark's stewardship, Brentford have achieved a high league position and played football which is a joy to watch.
"It is difficult to seek to implement change, particularly when things appear to be going so well, but I am single minded in my resolve that we can leave no stone unturned in our quest for sustainable Premier League Football.
"Innovation, not increased funding, can be the only route to success for clubs such as ours, and I fully accept that innovation is never without risk.
"We are continuing to build a strong base for the future.
"Everything has been perfectly amicable between all parties and we remain friends."
Warburton was appointed Bees manager in December 2013, moving from his previous role as sporting director, following Uwe Rosler's departure to Wigan Athletic.
He led them to promotion five months later and their form in the Sky Bet Championship has been remarkable - they only slipped out of the top six for the first time this season following a 3-0 defeat at Charlton Athletic on Saturday.
While Warburton and Weir will remain in charge of the first team until May, McParland has been placed on gardening leave by the club.