Manchester United boss Sir Alex Ferguson may make another defensive signing, despite the confirmed deal for Fulham youngster Chris Smalling.

The Times says Smalling's pre-contract agreement will enable him to remain at the West London club until the end of the present campaign before completing the move in the summer, when Nemanja Vidic is expected to leave the club, probably for Real Madrid.

Ferguson has moved quickly to sign another centre half, although the manager could delve into the market for another, more experienced defender if his worst fears about the Serbia player are realised.