Everton boss Roberto Martinez insists Ross Barkley is not for sale.
Manchester City, who have a long-term interest in the England international, have once again been linked with a big-money move for Barkley but Martinez has made it clear Everton will not be cashing in.
He said: "We have not received any approach. This January it is vital we recapture our best form and regain some momentum. If our best performers get compliments, we enjoy hearing those compliments and that is good but nobody will be leaving.
"Ross is someone with real passion for the game. You would always pay a good entrance fee to watch someone like him. But we are just concentrating on getting the result against West Ham. This is a real important moment in our season to make progress in another competition.
"The players and everyone at the club are only thinking about what we can do. The talent is there. We have been through a difficult period of bad results and we need to make sure we fulfil our potential. That is where we are. This is the most important game of the season."