Sam Allardyce has confirmed that West Ham are one of the clubs chasing Darren Fletcher but said he is yet to agree a fee with Manchester United.
West Bromwich Albion manager Tony Pulis has revealed he is also pursuing the Scotland captain, while Louis van Gaal has refused to guarantee Fletcher will still be at Old Trafford when the transfer window closes.
Fletcher is out of contract this summer and Allardyce has warned the 30-year-old he cannot wait "forever" as he looks to make signings this month.
"We've had no permission to speak to Darren Fletcher," Allardyce said in a news conference. "He's got quite a few clubs interested in him so when he makes his mind up everyone will know.
"I don't know what the timeline is. If any of the other packages offered to him are accepted then we would accept that.
"Or if they hadn't made their mind up or were negotiating somewhere else that would be it. We can't wait forever.
"I always think at this stage of the window, if you do get something nailed on you have to take it because you might end up with nothing if you don't."
Fletcher has spent his entire career at United but, despite being named vice-captain in the summer, has only started one league game since August.
Allardyce is currently without one midfielder, Cheikhou Kouyate, because of the African Nations Cup while Pulis wants to strengthen West Brom's squad in their relegation battle.
He said in a news conference on Thursday: "Darren is talking to three or four clubs and he will make his decision when it's right to make his decision.
"We've shown an interest, other clubs have shown an interest and he has got to sit down and make that decision so we will have to wait and see."