Real Sociedad are eyeing Borussia Dortmund striker Alexander Isak.

The exciting Swedish talent has just completed a superb six month loan in Holland with Willem II.

And La Real sports director Roberto Olabe told El Desmarque: "Alexander is a player we follow, just like many other young players with great potential.

"Isak is a young player with a lot of speed who is good at finding space."

For his part, Isak is prepared to move on from BVB this summer after getting his career back on track at Willem II.