Ronaldo, who helped fire United to a Premier League and Champions League double last season, is a target for the Spanish giants, although several weeks of claim and counter-claim have failed to result in a deal.

"I would be delighted if Ronaldo leaves and more so if it is to my former team," said the Liverpool right-back on Tuesday.

"If he leaves, Manchester United would lose the best player in the world."

Arbeloa joined Liverpool last summer from Deportivo La Coruna and has faced the challenging task of marking the 23-year-old.

Ronaldo's departure would be a blessing for many Premiership defenders, according to the Spain international.

"Let's hope Real Madrid make an effort," joked Arbeloa. "For me it would be fantastic, I would thank them."