Both clubs have now finalised the deal, with United determined to secure the forward ahead of their pre-season tour in the United States.
Manchester United are into the fourth round of the Emirates FA following an impressive 3-1 victory over underperforming Everton on Friday night.
Ancelotti wished Casemiro well, saying the club cannot stop the player’s wish.
It is unclear whether Ronaldo will be on the plane when Ten Hag’s side head to Thailand on Friday for the start of their pre-season tour.
The young Dutch defender joins the English side from Feyenoord in a deal worth £13 million.
