The Wales international has been heavily linked with a move to Old Trafford in recent months.
Jose Mourinho is a big admirer of the former Tottenham star, 28.
And according to Spanish outlet Diario Gol, Bale could be open to a move to United.
They claim the winger has threatened to quit Real this summer if Zinedine Zidane overlooks him.
Diario Gol reckon Bale wants regular game time despite injuries halting his season last time out.
Real are worried about their record signing's injury woes as well as Marco Asensio and Isco's impressive campaign last year.
Bale reportedly knows Mourinho would love to have him at Old Trafford and he could use that to his advantage to become the main man at Real.
The Real star would become Mourinho's fourth summer signing.
Bale would follow Romelu Lukaku, Nemanja Matic and Victor Lindelof to Old Trafford.
