The Reds' returning no.7 completed his signing two days after our previous game against Wolves and the Portuguese superstar is now eligible for selection when manager Ole Gunnar Solskjaer picks his team to play the Magpies this weekend.
Ahead of the highly anticipated match, here is everything you need to know about Ronaldo's potential reintroduction to the Theatre of Dreams…
HOW CAN I FOLLOW THE GAME?
The match kicks off at 15:00 BST, meaning those of you in the UK not lucky enough to be at Old Trafford will not have the chance to watch it live, due to TV broadcast regulations.