The 25-year-old, who left the Whites a year ago and joined Lyon in an β¬8 million deal, returned to Los Blancos on Thursday for a fee which almost trebled that.
The Spanish giants exercised a buy-back clause in their original agreement with the Ligue 1 side and club president Florentino Perez handed the Dominican Republic star the vacant No7 jersey.
It’s been a busy day for Mariano, who trained with his new and old team-mates for the first time on Friday morning at Valdebebas.
His arrival brings healthy competition to the forward line of Gareth Bale, Marco Asensio and Karim Benzema.
πΈ @marianodiaz9 | #WelcomeMariano pic.twitter.com/eLWXVy28Jg
β Real Madrid C.F. π¬π§πΊπΈ (@realmadriden) August 31, 2018
πͺ @marianodiaz9 trains with his new team-mates! #RMCitypic.twitter.com/6tN7crAtks
β Real Madrid C.F. π¬π§πΊπΈ (@realmadriden) August 31, 2018
