Fellaini, who is sidelined with a knee problem, has become a key performer for Jose Mourinho and in the summer the United boss was adamant the Belgium enforcer would not be sold.Arsenal boss Arsene Wenger has refused to rule out a move for Thomas Lemar when the transfer window opens in January.The Gunners were close to landing the £90million-rated Monaco man late in the summer window, before calling time on the deal with Manchester City unable to push through a move for unsettled Gunners forward Alexis SanchezHe is ahead of what is a normal central defender at his age. At the top level there are not many who play before 24 years old.