The Red Devils are winless in three Premier League games since their 4-0 rout of Chelsea FC at Old Trafford in their opening fixture of the new season last month.
Manchester United have dropped points in 1-1 stalemates at Wolverhampton Wanderers and Southampton, while the Red Devils suffered a surprise 2-1 loss to Crystal Palace at Old Trafford.
Ole Gunnar Solskjaer’s side have plenty of talent in the shape of one of Europe’s best goalkeepers David De Gea, World Cup winner Paul Pogba and the world’s most expensive defender Harry Maguire.
However, the Red Devils have been unable to get their talent to gel into a championship-winning team.
Former Arsenal manager Wenger, who led Arsenal to three Premier League titles during his reign, doesn’t envisage Manchester United challenging for the top-flight crown this term.
“When you see Man United, they are one of the examples where there is a potential there,” Wenger told beIN Sports. “But they have not found a collective way.
“Maybe these players are not mature enough to carry the team play of a team like Man United, altogether. That is the question mark now.
“You feel there is something coming out but it’s not ready. When you watch them play, they are not a candidate to fight for the championship.
“Will they emulate what (Ryan) Giggs, (Paul) Scholes, (David) Beckham did over a number of years? Personally, I’m not convinced.”
Solskjaer has adopted a policy of trying to sign young British talent since the Norwegian took over the reigns of Manchester United from Jose Mourinho last term.
Manchester United signed Swansea City winger Daniel James in a £17m deal before Aaron Wan-Bissaka arrived in a £50m switch from Crystal Palace last term.
Maguire became the world’s most expensive defender following his £80m switch to Manchester United from Leicester City.
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