Nicolas N’Koulou in action for Marseille
The two English clubs are hoping to bring the 26-year-old to England when his Marseille contract finishes at the end of the month.
But now sources in France have revealed that yet another club are trying to sign him in the form of Schalke.
The German club finished fifth in the Bundesliga last term and are in the market for defensive reinforcements having shipped 49 goals in their 34 games last term.
They reckon N’Koulou fits the bill and are now ready to challenge his long list of suitors for his signature.