Cristiano Ronaldo made his feelings crystal clear in mid-September after signing a contract extension with the Spanish giants.
"Manchester United is the past," he told reporters. "Real Madrid is now my home.
"I hope that I'm here until I retire. This is a great club."
However, let's see if the Portuguese superstar is still saying that in a few years' time.
Here are five reasons why he should have re-signed for Manchester United this summer...
Chance to return home
Who knows, maybe the Portuguese superstar would have returned had Sir Alex Ferguson still been in charge.
Ronaldo spent some of the most important years of his young life at Old Trafford and enjoyed every minute of the experience.
It's well documented how fondly he remembers his time at Manchester United, but the opportunity to return home may now have gone for good.
Chance to run away from Real Madrid circus
As well as the chance to return home, Ronaldo has missed the opportunity to run away from the Real Madrid circus.
There always needs to be a crisis at the Bernabeu, and there have been times over the last four years when Ronaldo has questioned whether Real Madrid is the right club for him, even going as far as to describe himself as "sad" in September 2012.
Everything is magnified in the Spanish press. Perhaps Ronaldo likes it, but at Manchester United a big weight would have been lifted off his shoulders.
Boost chances of winning second Ballon d'Or
Ronaldo dreamed of winning the biggest prizes - both team and individual - that football had to offer when he completed his £80m move to Real Madrid from Manchester United in 2009.
But during his four-year stay at the Bernabeu he has failed to win either the Champions League or the Ballon d'Or - both of which he won during his six-year stay at Old Trafford.
The Portuguese star is desperate to win another Ballon d'Or within the next couple of years, and maybe he would have stood a better chance if he reestablished his reputation as the Premier League's best player - rather than La Liga's second best.
Manchester United need him
With Ferguson retired and David Moyes now in charge, Ronaldo's return would have smoothed the current transitional phase.
Manchester United didn't need someone like him this season - they needed him.
Had Ronaldo returned there's no doubt the reigning Premier League champions would be much higher in the league table, but in the end he decided that the Red Devils belonged in the past.
Opportunity to end career where he's appreciated
Ronaldo has been at the Bernabeu for four-and-a-half year now, but it's only recently that the Real Madrid supporters have begun to appreciate him.
At Old Trafford, on the other hand, the fans took to him immediately and still chant his name today.
Will the Real Madrid faithful do the same to Ronaldo when he finally departs the Spanish capital? Don't count on it.
He could have ended his career where he's appreciated - but he might well have missed his chance.