The Red Devils manager feels his team are too far behind Chelsea in the title race to challenge as they target silverware on three other fronts Fixture congestion, Manchester United’s cluster of cup runs and Chelsea’s hefty lead at the summit mean Jose Mourinho views the Premier League title as “an impossible mission”. United made it back-to-back 4-0 wins over Championship opponents in their defence of the FA Cup, with Marouane Fellaini, Chris Smalling, Henrikh Mkhitaryan and Bastian Schweinsteiger on target in a routine victory against Wigan Athletic at Old Trafford on Sunday.