#2 Finding the best centre-back partnership
The reason why Manchester City and Liverpool have been dominating this season is that along with their stellar attack; they have a rock solid backline. Jose Mourinho wanted a centre-back in the summer transfer market, but the Manchester United board reportedly declined his wish.
Jose has already bought the likes of Eric Bailly and Victor Lindelof since he took charge of United. Though Eric impressed at first, his inconsistency has broken the manager's trust. For Lindelof, however, the physical nature of the Premier League has been tough, and he is finding it difficult to get going. The Red Devils do have Smalling, Jones, and Rojo as other options but none or no pair has impressed the manager.
Manchester United have conceded a lot more goals than they did at this stage last season and without a dependable centre-back pairing, things could become only worse.