Schalke say they are battling Liverpool to sign Chelsea forward Salomon Kalou.
They also have Tottenham midfielder Rafael van der Vaart at the top of their summer shopping list.
Boss Huub Stevens admitted he is desperate to boss Dutch ace Van der Vaart again after managing him at Hamburg before the 29-year-old moved to Real Madrid.
And Stevens has identified Champions League winner Kalou to join his Bundesliga side with the Ivory Coast international looking for a new club following his release from Stamford Bridge.
Van der Vaart, whose wife Sylvie works for a German TV station nearby Schalke's home ground, would cost the German club around £10million but he is refusing to discuss his future until after Euro 2012.