The Red Devils have made a disastrous start to the Premier League season after Mourinho missed out on some targets in the summer.
The Manchester United manager was thought to be keen to sign a new centre-half given the inconsistent performances of Eric Bailly, Phil Jones, Chris Smalling and Victor Lindelof.
Manchester United brought in Shakhtar Donetsk midfielder Fred, unproven FC Porto teenager Diogo Dalot and veteran English goalkeeper Lee Grant ahead of the new season.
The trio have been unable to significantly improve Manchester United’s fortunes and Mourinho’s side have already lost three games in the Premier League this term.
Mourinho appeared to be on the brink of the sack with his side 2-0 down to 19th-placed Newcastle United at half-time of their Premier League clash on Saturday evening.
However, goals from Juan Mata, Anthony Martial and Alexis Sanchez secured a dramatic 3-2 victory to buy Mourinho some time to turnaround the club’s ailing fortunes.
Former Manchester United defender Neville outlined why the Red Devils board need to back Mourinho in the next transfer window.
“I hope the club can back Jose with the players he wants in January, and the players he doesn’t want,” Neville told Sky Sports on Sunday. “That’s the key thing.
“I’ve got the feeling in the last few months that the club have retreated a little bit on him in the transfer market, but maybe even retreated on him in terms of the players he doesn’t want. I feel there’s maybe a tug-of-war (between Mourinho and the board) and that needs to stop.”
Mourinho will have an opportunity to plot Manchester United’s revival over the next 12 days before the Red Devils make the trip to the Portuguese coach’s former club Chelsea FC on Saturday 20 October.
Manchester United break up for the international break in eighth spot and seven points behind leading pack Manchester City, Liverpool FC and Chelsea FC.
The Red Devils have lost to Brighton, Tottenham Hotspur and West Ham in the Premier League this term, while Manchester United lost to Derby County on penalties in the Carabao Cup third round.
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