The English forward has established himself as the main star of Bayern Munich under Kompany.
The German attacking midfielder has become the top target for Vincent Kompany's team to bolster their offense in the summer.
Real Madrid and FC Barcelona are competing for the signing of Upamecano amid pressure from Bayern and interest from the Premier League.
FC Barcelona is closely following Leon Goretzka and is preparing a move to sign him for free next season.
AS Roma has initiated formal contacts to strengthen its attack with a player who currently plays for Celta de Vigo.