Hull City have announced that head coach Leonid Slutsky has left the club by mutual consent.
The former Russia manager was appointed as Marco Silva's successor in June following the club's relegation from the Premier League.
However, he has been unable to transform the Tigers' fortunes, winning only four of his 20 Championship games to leave them three points above the relegation zone.
As a result, Slutsky has departed the KCOM Stadium, along with head of club strategy Oleg Yarovinsky, and Nigel Adkins is believed to be the frontrunner for the vacancy.
Hull chairman Ehab Allam told the club site in a statement: "Leonid has worked tirelessly in his role and has acted with complete honour and been a pleasure to work with.
"Unfortunately results have not improved as both parties would have hoped and therefore it was agreed for the relationship to come to an end.
"I would like to thank Leonid and Oleg for their efforts here and sincerely wish them well for the future."
Slutsky added: "I would like to really thank everyone associated with Hull City from the players and staff to the owner and especially the fans.
"I am very proud to have been through this experience, it was challenging but a very exciting time for me.
"Hull City will always be a part of my heart and I wish the team all the very best for the future."