West Ham have had an impressive season so far, but things are threatening to turn sour at Upton Park after a poor run of form.
The Hammers are challenging for Europa League qualification, but have won just one of their last eight Premier League games, and were dumped out of the FA Cup after a 4-0 defeat to West Bromwich Albion.
Manager Sam Allardyce is now under increasing pressure again, and he situation is exacerbated by the confusion over Allardyce's contract situation in East London.
'Big Sam' is out of contract at the end of this season, and Hammers co-chairman David Sullivan told the London Evening Standard that there are no scheduled talks to extend that contract.
That has sparked rumours over who could replace him as manager, with The Telegraph suggesting that Besiktas boss Slaven Bilic is in the frame.
Bilic, 46, is a familiar face to West Ham fans given that he used to play for the club in the 1990's, whilst he is most well known in England for being the man who took Croatia to the 2008 European Championships with a win over England at Wembley.
The charismatic and passionate Bilic remains a popular figure at Upton Park, and fans have been reacting to the speculation on Twitter.
Many supporters are delighted to hear the rumours, believing that Bilic would represent a big upgrade on Allardyce, and would be an ambitious appointment ahead of the club's move to the Olympic Stadium.
Here are some of the reactions from West Ham fans on the rumours of West Ham's interest in bringing Bilic back to Upton Park...
If Big Sam did lose his job, I'd be more than content with Bilic taking over. #WHUFC— Billy Kerr (@Billyburr16) February 17, 2015
Rumours Allardyce is getting sacked are bound to be rubbish but think he will go at the end of the season.. Get Bilic in! #whufc— Pat Bulbeck (@patbulbeck13) February 17, 2015
Would take either Bilic or Moyes. Preferably Bilic. #COYI— Adam Moore (@mooro_skipbear) February 17, 2015
@IronViewsStu Bilic brings a lot of passion and the ambition the club and supporters share, something allardyce doesn't ever seem to have— West Ham Pictures (@WestHamPictures) February 17, 2015
There's only two candidates, in my view, to replace Allardyce should his contract not be renewed. Bilic or Howe. Bilic is my first choice.— AllSportsView (@AllSportsView) February 17, 2015
Would love to see Bilic come in as West Ham manager!— Darren Little (@DarrenLittle83) February 18, 2015