The Red Devils currently sit sixth in the Premier League table but have hit their stride after picking up back-to-back wins.
Despite their good run, United are still four points off fourth-placed Arsenal.
“I don’t see Manchester United as good enough to get into that top four”
Former Gunners striker Nicholas believes Jose Mourinho’s squad lacks the quality to seal a place in the Champions League.
And he reckons Tottenham will miss out as well.
“I don’t see Manchester United as good enough to get into that top four,” Nicholas told Sky Sports.
“They’re not clinical enough, they can’t see victories coming, they’re making excuses… they just don’t have the quality to get in there.
“Spurs are another one.
“They need to take advantage of other teams slipping up.