3. Alex Song
With William Carvalho expected to come at a cost, Barcelona central defender Alex Song could just be the cut-price buy Moyes could well look at. Song has been spairingly used by Barcelona boss Gerardo Martino this season, and could just be the talented box-to-box presence United have been missing all season. And don’t forget, Song guarantees top-level Premier League experience from his successful time at Arsenal and has all the required attributes to be a regular started at Old Trafford.