West Ham may have enjoyed an impressive return to the Premier League so far this season, but there are still many areas of the team that needs improvement if they are to maintain their good form.

With midfielder Kevin Nolan being the club's top scorer with five goals and just four of their Premier League goals coming from strikers, an out-and-out goalscorer will be high on Sam Allardyce's priorities.

Big Sam will also be looking for another winger, to help club record signing Matt Jarvis, and a goalkeeper to replace the ageing Jussi Jääskeläinen. A right-back will also be in his sights in order to strengthen a defence that is almost unchanged from last season's Championship campaign.

Click on Jack Butland to see the ten players who will be on Big Sam's January Transfer Window wishlist

Jack Butland - Birmingham City