After eight seasons and 18 titles with Real Madrid, Casemiro left the current European and Spanish champions to join Manchester United for a reported fee of £60 million ($70 million).

And in that time that Casemiro was at Real Madrid, he went on to become part of a legendary midfield trio that inlcuded two other midfield genius Luka Modric and Toni Kroos. Together, they played nine finals and have won them all. 

As Casemiro leaves for 'a new challenge', both Kroos and Modric left him emotional letters, published by Spanish national daily sports newspaper Marca. Both letters are shared here for the readers of The Daily Star: 

FAREWELL LETTER FROM TONI KROOS TO CASEMIRO

With you, my dear Case, it was impossible not to break a sweat... in any situation. Because you wouldn't let us relax even in the Turkish bath. Meeting there was another torment: you told someone to go and you almost had exercise bikes and weights ready. A warning for your new colleagues to know. Because with you even the Turkish bath was a gym... and you only allow people to lie down when it's time to do sit-ups.

I'm going to miss you. As an exemplary professional. As a top player. As a fighter who saved me from several... But, above all, as a good person.

We have made history, damn it! What a legendary period...

Now our sporting paths are parting, but our friendship remains. I can assure you of that.

I wish you all the best, see you soon.

Good luck to you.

Your Toni.

LUKA MODRIC'S FAREWELL LETTER TO CASEMIRO

Dear Case, I still remember your debut with our club.... How nervous you were! I asked you to be calm and now I think about it and look how it turned out. What you have achieved! It was also my first season and neither of us could have imagined what soccer had in store for us.

You have become a real leader. You have been one for your teammates and for madridismo. We will always remember you.

We have won a lot together, but I'll keep the moments that nobody sees. With the day-to-day work in Valdebebas. And above all with the jokes, because you were always in a good mood, even in moments of tension or when there were mistakes.

Those laughs with you gave me peace of mind. Just like looking back and seeing you, knowing that there's going to be a lot of "Njega-Njega". You've been the best bodyguard in the world.

I'm going to miss you, but I wish you the best. It's what a professional and a person like you deserves.

Thanks for everything and best of luck, my friend!