Recall, Ronaldo sealed a move to United on transfer deadline day, bringing just over two years at Juventus to a close.
After sealing his return to United, he joined Portugal on international duty and returned to England on Saturday where he was greeted by ex-teammate, Darren Fletcher.
Following his return to training at Carrington, attention will now turn to when he could make his debut.
United coach, Ole Gunnar Solkjaer has been cautious in introducing United’s other summer signing to the starting XI, making Raphael Varane and Jadon Sancho wait for their first starts.
