The Red Devils slumped to their fourth loss of the Premier League season to leave Manchester United 12 points behind the Premier League leaders after 12 games.
Manchester United made the short trip to the Etihad Stadium in good form following three victories in their last four games in the English top flight.
Mourinho’s side collected three points against Newcastle United, Everton and Bournemouth, as well as a 2-2 stalemate with top-four rivals Chelsea FC.
The Red Devils came from 1-0 down to secure a famous 2-1 win at Juventus in the Champions League last week to notch up one of their biggest victories under Mourinho.
Mourinho had bought himself some more time at Manchester United following a difficult start to the Premier League season after losses to Brighton and Hove Albion, Tottenham Hotspur and West Ham.
Former Manchester United defender Neville believes Mourinho deserves more time at Old Trafford despite their resounding 3-1 loss to the defending champions.
“David Moyes couldn’t sort out the group, Louis van Gaal couldn’t sort out the group and now Jose Mourinho – the most successful manager of the last 15 years along with Pep Guardiola can’t sort out the group,” Neville told Sky Sports on Sunday.
“I’m not as quick to sit here and say it’s the coaching staff’s fault. There is a problem structurally at the club that means it will be difficult for any coach to perform.
“Can he do better? Of course he can, but this guy has won everywhere he’s been. I haven’t lost faith in him yet. He is going through a difficult moment, but I haven’t lost faith in Jose Mourinho as a coach.”
Manchester United are in tenth place in the Premier League table and seven points behind Tottenham Hotspur in fourth spot.
The Red Devils are in a strong position to qualify for the Champions League knockout stage after their 2-1 win against Juventus in Turin.
Manchester United are in second place ahead of their home clash against Young Boys in their next European fixture before finishing the group stage with a trip to Valencia.
Mourinho’s might need to win the Champions League in order to secure their place in the competition next term with Manchester United already so far behind the top four.
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