The Portuguese forward has reportedly made an ‘irreversible’ decision to leave the club where he has won three Champions League titles and scored over 400 goals.
But that begs the question: where will he go next?
The most obvious choice for the 32-year-old would be a return to Old Trafford and the club where he made his name.
Although he didn’t always enjoy the best relationship with compatriot Jose Mourinho, the forward did praise his former manager as the ‘greatest thinker’ he has worked with.
Ronaldo is also exactly the type of big name signing that would maintain United’s status as one of the most commercially attractive clubs in world football.
If there is a big name centre-forward linked with a move away this summer, you can almost guarantee PSG will be linked with him.
The Qatari-owned French club are one of the few clubs in Europe who could afford Ronaldo’s wages and would no doubt love to sign a player of his stature to fill the void left by Zlatan Ibrahimovic last season.
With wonderkid Gianluigi Donnarumma thought to be top of Madrid’s wish list this summer, could the young Italian stopper be used as a makeweight in a deal for Ronaldo?
The Italian giants look to be on an upward trajectory once more after being bought out by a Chinese consortium last season.
An audacious bid for Ronaldo could put the Rossoneri firmly back on the world stage.
Carlo Ancelotti, another one of Ronaldo’s former managers, is now in charge of Bayern Munich.
The German side are undoubtedly one of the biggest clubs in Europe and could feed Ronaldo’s thirst for silverware.
Quite how he would fit into the Bayern system – in a club that prides itself on humility and in a league that fights commercialism – makes a move seem unlikely.
Since the departure of David Beckham, Major League Soccer has struggled to attract the very biggest names in football.
True, the likes of Andrea Pirlo, Kaka and Bastian Schweinsteiger retain a certain amount of glitz, but they are not the same sort of household names to capture the imagination of the American public.
New York City and LA Galaxy are the likeliest of destinations – but whether Ronaldo is ready to sacrifice playing at a lower level just yet is another matter entirely.
Chinese Super League
Ronaldo is exactly the kind of marquee signing the league needs to put itself on the map.
With the sort of money floating around the CSL, it would be no surprise to see one of the clubs make the Portuguese forward the highest paid player in the world once again.
It may be another step down again from MLS, but the best part of a million pounds a week could probably persuade most people.
The 32-year-old has long spoken of his desire to finish his career in the Spanish capital and even said he wants to continue until he’s 41.
While he has said he is upset at the treatment he’s received in Spain after being accused of alleged tax evasion, could this all be ploy to get another bumper deal at Madrid?
In Jorge Mendes, Ronaldo certainly has an agent who knows how to strike a deal.