 On 8 January 2014, Sam signed a four-year contract with Schalke 04 running until 30 June 2018.He joined S04 for a transfer fee of €2,500,000 in June 2014, upon completion of the 2013–14 Bundesliga season.On 11 May 2015, he was suspended indefinitely from the club in the aftermath of a loss to 1.