Sam Allardyce has told Aaron Cresswell he would be better served staying put at West Ham next season even if he is wanted by Premier League heavyweights Manchester City and Chelsea.
Cresswell has been an ever-present in the league so far this season, his first at Upton Park .
Having twice been named in the Championship team of the year, Cresswell has continued to impress in the top flight, and .
ESPN FC was also told that City are keeping tabs on Cresswell as they look to bolster their number of homegrown players quota for next season.
However, Allardyce said Cresswell should remain at West Ham and continue his progression rather than seek a move.
Asked if the 25-year-old would be better off staying at Upton Park, the Hammers boss said: "There's no doubt about that because he's year one in the Premier League.
"Year one is an ongoing experience that you have that you know the level. Aaron now needs to grow from that experience. His challenge is to continue to work even harder than he has this year, not to rest on his laurels.
"We have seen players do that and then year two is more of a disaster than his impressive first year. His professionalism will come into play at the start of next year by where he gets and if he gets to the next level."
Cresswell, who has four years remaining on his contract, was recently quoted as saying , and Allardyce added: "As far as I am concerned, no one has bid for Aaron Cresswell.
"It's all pure rumours and speculation. My problem is: Does it affect Aaron Cresswell and affect his performance?
"That's for me to make sure Aaron does what he can all season and he performs on a consistent basis. What will happen in the summer, we will wait and see.
"I have even heard somebody said we have put a £25 million buyout on him. That's the first I know. I haven't heard anything through the owners to say, 'Well, if somebody wants Aaron Cresswell they would have to pay £25 million.'''
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