Schalke on Monday released Ghana midfielder Kevin-Prince Boateng and Germany winger Sidney Sam on Monday with immediate effect, while suspending Marco Hoeger following apoor run which has seen the club take just one win from its last eight games. Roberto Di Matteo’s men are now sixth in the Bundesliga standings and in danger of missing out on a EuropaLeague berth next season, with Borussia Dortmund hot on its rival’s heels with two points between them and just two games to play.