Cristiano Ronaldo’s future with Manchester United remains uncertain despite the club insisting he was not for sale.

The Portuguese winger claimed last week he would be leaving Old Trafford because of the furore surrounding his role in the World Cup sending off of Wayne Rooney.

But the 21-year-old has since softened his stance and amist he may now stay with United.

“There is still nothing concrete,” he said Thursday.

“If it is a question of staying then it will be fine, if I leave it will also be fine.

“It is still a question that has to be decided and is an issue that has to be discussed in the next few days.”

Regardless of Ronaldo’s stance, United insist he will stay be staying at the club.

“There is no possibility of Cristiano being sold,” said United.

“Cristiano recently signed a new contract until 2010 and the club fully expects him to honour it.

“The club will not listen to any offers for Cristiano. He is one of the brightest young stars in world football as demonstrated by his performances at the World Cup and Manchester United are not in the business of selling their best young players.”