Schalke coach Felix Magath has revealed they're in talks with Real Madrid captain Raul.
However, Magath, while confirming that negotiations are underway, believes a decision may not be made for a month.
"We are interested in him and are negotiating with his agent," Magath told Bild newspaper.
"The player has not decided yet and wants time until the end of July to make up his mind.
"It would be a huge signing for Schalke and the whole Bundesliga."
"We have Christoph's friendship with Raul to thank for the chance of us signing such a player," added Magath.