The Wales international has been told to pack his bags.
Zinedine Zidane is keen to get him off the wage bill and brutally told the 30-year-old he has no future at the club.
Chinese outfits Jiangsu Suning and Beijing Guoan have been linked with raids.
But former player turned pundit Tony Cascarino reckons Old Trafford remains a possible destination.
“Man Utd boss Ole Gunnar Solskjaer has been linked with Gareth Bale”
“I do see Manchester United as a really viable option for Gareth,” he told talkSPORT.
“But again he’s got to tick the boxes for them.
“What Zidane said was pretty brutal. All we’ve heard is the club’s perspective, be it either Zidane or the club’s president and so forth. We haven’t heard from Gareth.
“The fans have made it clear they want him to go. He’s not wanted at Madrid.
“Gareth needs to go and speak to the president and talk about what the club want for him and let his agent know. Can it be a loan move or a permanent deal?
“He needs to get away from that football club, as he’s clearly not wanted there.”
Bale earns a report £500,000 a week at the Bernabeu.
Few European clubs can match that – including the Premier League’s elite.
Cascarino says the former Tottenham man has some tough decisions to make if he wants to play regular first-team football.
“I think he should come back to these shores, because there are clubs playing an exciting brand of football,” he added.
“But unless Gareth gives something back and his demands are not so demanding on a football club where they’re thinking it’s costing us an awful lot of money and yes we’re getting a very good player, then it won’t happen.
“It’s got to be structured differently for Gareth, but he can’t expect to be paid the same sort of money he’s on now at Real Madrid.
“Gareth has to force the issue and come out and say ‘I want to leave Madrid, I don’t want to stay there’.
“He needs to make it clear he wants to be part of something elsewhere, as at Madrid he’s just been banished from the squad.”