The Spain midfielder, who is now 25, is entering his peak years and has been impressing.
Per The Mail, the RB Leipzig star is a hot property, given he will have a release clause.
Olmo can leave for 52 million, which is in range for most top European clubs.
Real and United could be joined by Manchester City, Chelsea, and Tottenham in watching Olmo.
How he performs at Euro 2024 may play a big role in where he ends up later in the summer.