Real Madrid star Cristiano Ronaldo has backed Manchester United to win the Premier League title this year.

The former United man met up with Sir Alex Ferguson on his return to Manchester for the Champions League clash against Manchester City.

"There are three or four teams who can win the league – that is why it is the most competitive in the world," said Ronaldo. "I think United will do it this year and win their title back.

"We didn't speak about me coming back to the Premier League, though. Sir Alex came to the hotel to speak with Jose Mourinho – it was nice to see him.

"I loved coming back to the city. When we arrived at the airport, I was so happy. I'm always happy to be here."

Ronaldo played in Real Madrid's 1-0 defeat to Real Betis on Saturday.