The Premier League transfer window reopens later this week.
Neville believes the United squad is good enough to challenge for the title.
Speaking on Amazon Prime Sport after the 1-0 win against Wolves, Phil Neville said: “The squad, if you look at the bench, shows they have the depth to maintain a title challenge with the amount of games they have got.
“I don’t see any player out there who are available [in the winter market] that could come in and improve Manchester United in January.”
Starting from January 2, clubs from the Premier League, Championship and below will be allowed to do transfer business once again.
Amad Diallo and Moises Caicedo are expected to arrive at Old Trafford next month although both youngsters are unlikely to play in the first team this season.
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