Cristiano Ronaldo's return will not be enough to guide Manchester United to a first Premier League crown since 2013, says former Chelsea striker Chris Sutton.
Ronaldo scored twice on his Old Trafford homecoming in Saturday's 4-1 win over Newcastle that took United top of the table four games in.
But Sutton said on BBC Radio 5 Live's Monday Night Club: "I am worried a little bit about everybody getting carried away.
"There’s no doubt Manchester United are better off for having Ronaldo but the question is: what is he going to win them?
"Are they going to push for the Premier League? They may win a Carabao Cup – is that enough? I still don’t see them challenging Manchester City or Liverpool."
Former Manchester City and England defender Micah Richards, also speaking on the Monday Night Club, disagreed.
Richards said: "I think United can believe now. Why can’t they believe? You’ve got Ronaldo! He scores goals. For the first 60 minutes against Newcastle they didn’t play well - but who cares?
"They’ve got a better chance this season than they did last season."