Manchester United are prepared to pursue Gareth Bale should he become available.
Jose Mourinho has expected Real Madrid to keep Bale, but reports in Spain suggest he could be moved if Kylian Mbappe is purchased.
Madrid have offloaded Alvaro Morata to Chelsea and James Rodriguez to Bayern Munich.
Bale wants to remain with Real Madrid but he could face a reduced role with Mbappe.
Mourinho confirmed this week that he wants "an attacking player to play through the wings" as one of two additional signings before the close of the transfer window.