The Portuguese winger has been heavily linked with a move back to Manchester United, and cast further doubt over his future in Spain this week by denying rumours he has signed a contract extension with Real Madrid.
Ronaldo left the Red Devils in 2009 for a world record £80 million transfer fee and has a record of scoring more than a goal-per-game with Madrid – but had a less than happy 2012/13 campaign.
Earlier in the season he declared he was ‘sad’ while more recently he has hinted he won’t extend his current contract with Madrid.
That has opened the door for Manchester United to make a move for their former player, and The Sun claim they hope to use Ferguson, the man who took Ronaldo to the Premier League, to convince him to make the move back to Old Trafford.
Ferguson stepped down last season after 26 illustrious years in charge, with David Moyes being named as his successor.
According to the Sun, Manchester United who are willing to offer £65m plus a player, but may have to wait to see if Gareth Bale’s move to Madrid materialises before knowing if they can land Ronaldo.