Former Manchester United defender Paul Parker has called on Cristiano Ronaldo to make an apology for his ugly strop on Sunday.

Parker told the Telegraph: "Ronaldo's reaction to being substituted was disrespectful first and foremost to the person who handed him the tracksuit top, but it was also disrespectful to the manager and the guys he plays with.

"For all his personal ambition and desire to win Golden Boots and other awards, Ronaldo cannot achieve anything without the 10 guys who play alongside him on the pitch. Some people have suggested that, because he is so important to the team, Sir Alex has to handle Ronaldo like he handled Cantona.

"Eric got away with things with the manager. We would all have to wear a tie with our club suits, but Eric never did and it was never mentioned. Eric didn't play to the cameras, though, and he would never have reacted like Ronaldo did on Sunday. He had too much respect for the manager and his team-mates.

"We all accepted Eric's relationship with the manager because he respected us. If we arranged a night out at the Dog and Duck, then Eric would be there with us.

"Ronaldo? I'm not too sure. How you are seen by your team-mates is crucial, but they won't be happy with what he did. He has to remember that you are only as good as the guys you play with. I'm certain Sir Alex will deal with it, but Ronaldo needs to apologise to the manager and his team-mates."