His first seven days alone have seen him travel through Milan, Carrington, New York, San Diego and Houston.
He's said farewell to his former club Internazionale, met his new team-mates, taken part in his first training session, and then made his inaugural appearance as a United player - in Wednesday's friendly with Real Madrid in Texas.
In the middle of all of that, Onana sat down with club media to conduct his first proper interview since completing that big summer move from Serie A to the Premier League.
Here are five top takeaways from the goalkeeper's insightful introductory chat.