Many fans have been wondering if the forward will make a second debut for the club this Saturday against Manchester United.
Ole Solskjaer at his pre-match news conference said, "He has been having a good pre-season with Juventus, he has played for the national team
"He has had a good week with us here and he will definitely be on the pitch at some point that is for sure."
This means Ronaldo will be available for selection against Newcastle both could start from the Bench.
Ronaldo scored 118 goals in 292 games in over six years during his first spell at the club.