With less than two years remaining on his current contract, Estupinan is now a target for multiple teams. United's interest in the player is reportedly a result of ongoing fitness concerns surrounding Luke Shaw.
Another team also interested in Estupinan is AC Milan. The Italian club recently lost Theo Hernandez to Al-Hilal, creating a need for a new left-back. As a result, both United and Milan are actively pursuing Estupinan's signing.
