Why is that? Is it because their premier players like Rooney and RVP have been injured or out of form perhaps? There's a reason they are 6 points behind us and have lost 5 out of the last 6.
Their central midfield consists of Fletcher (will he ever come back to his previous form?), Cleverley (hahahaha!), Carrick (old and now picks up niggly injuries and is snail like) and Jones (what is his best position?).
Their back four consists of Smalling (still young and could make it) Evans (really??) Ferdinand (finished), Vidic (31 and wants out and is a liability).
Their two main full backs are Evra - leaving, and Rafael - total liability.
Up front or creatively shall we say, they have Rooney - could leave, RVP - unsettled if the rumours are true and getting old, Januzjar - looks a real star, Hernandez - only plays a bit part, Welbeck - bambi on ice and has never looked the part of a top class striker, Valencia - hit and miss.
Juan Mata is a top drawer player. No disputing that whatsoever, but its a gamble for me given the crumbling defence and the central midfield issues they have.