Manchester United want to shop at Real Madrid this summer.
The Sun says United have been rejected in their attempts to land Gareth Bale, Karim Benzema, Raphael Varane and Sergio Ramos.
United reportedly made two £100million bids for Bale this summer, but were rebuffed by Real president Florentino Perez.
Van Gaal apparently also saw moves for £50m-rated Benzema - who has been linked with Arsenal - and £45m Chelsea target Varane end in failure.
The Dutchman has publicly admitted his interest in defender Ramos but he is expected to sign a new deal at the Bernabeu.