The Genius Media Nigeria gathered that the Portuguese superstar, 37, has made it clear his desire to leave Old Trafford this summer in search of Champions League football.
But he has struggled to find a suitor who would take him – with Chelsea and Bayern Munich both ruling out a bid.
However, one option which seems to still be on the table is a loan or permanent return to his former club Sporting Lisbon.
Ronaldo came through the club’s youth set-up before leaving for United in 2003.
According to Foot Mercato, Hugo Viana, a former team-mate of Ronaldo’s and now the sporting director at Lisbon, is working hard to convince the Real Madrid legend to return to the club.
Sporting can offer Ronaldo Champions League football – something United are unable to provide.
And Erik ten Hag’s men have made the worst possible start in their attempts to return to Europe’s premier competition.
They lost their opening game of the season 2-1 to Brighton, before being humiliated 4-0 by Brentford – a pair of results which leave them bottom of the Premier League with zero point and minus 5 goals