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."
Christoph Metzelder was Raul's team mate for the last three years and could be the key to tempting Raul to move to the Bundesliga after joining the Royal Blues himself on a free transfer this summer.
"We have Christoph's friendship with Raul to thank for the chance of us signing such a player," added Magath.