Real Madrid are already fielding enquiries for Sergio Reguilon.
The young fullback has been told by coach Zinedine Zidane that he is not required for next season and he should find himself a new club.
AS says Real would favour the loan option and have already received three approaches from interested clubs.
Leganes, which have just extended Oscar Rodriguez's loan into a second season, and Alaves have expressed interest, along with Borussia Dortmund.
BVB still have Reguilon's Real teammate and fellow fullback Achraf Hakimi on a two-season loan.