Manager Gary Johnson has left Bristol City by mutual consent after a poor run of results in recent weeks which has plunged the Robins into the bottom half of the Championship table.
Johnson took charge at Ashton Gate in September 2005 and led City to promotion from League One in 2006-07, before the Robins reached the Championship play-off final in May 2008, losing 1-0 to Hull City.
Last term Johnson's side failed to reach the play-offs and their fortunes have dipped further this season.
Johnson told his former club's official website: "I'd like to thank the chairman for his continual support throughout the last four-and-a-half years and congratulate him on taking the club to the level it currently enjoys.
"I thank the majority of the club's fans for their tremendous support during my time with the club.
"I thank the players and staff for their continued efforts in getting this club from what was a position at the bottom of League One when I joined, to promotion to the Championship, to the play-off final for a place in the Premier League and then to compete in the Championship thereafter.
"I leave Bristol City with fond memories, but feel the time is right to move on to a new challenge."