Sam Allardyce admits that top goal-scorer Ravel Morrison could leave West Ham in the transfer window, with Fulham hovering.
Goal exclusively revealed earlier this month that Morrison had told West Ham he wants to join Fulham, with Cottagers boss Rene Meulensteen subsequently confirming the west Londoners had had a bid rejected.
And having previously insisted that there was "no truth" in reports that Morrison wanted to leave, Allardyce now admits the former Manchester United youngster has had his head turned by talk of a transfer.
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"He's a young man, and a young man with not much experience, you have to give a bit of leeway for that scenario. He's not an experienced man in life, never mind in football.
"And inexperienced young players can react in many different ways.
"It's difficult for a manager to give advice to a young player when it comes to that because they see you probably working for the club as the manager rather than working for them.
"This window creates a hysteria about the fact that people will tell you that somebody is going to come and get you. That could then turn your head, probably based on the money that people say you're going to make. Everybody as a human being is not all the same, some players will act and react a different way, to whatever they feel is best for them.
"I would probably think that across the country at every club there is a player unsettled because of mad January, the lunatic transfer window that creates havoc throughout the game.”