He was ruled out at short notice for Tuesday’s Champions League goalless draw at Steaua Bucharest before leaving Romania for treatment in Munich.
“Kevin did not have problems in the past few weeks,” Schalke sports director Horst Heldt said after his departure. “He spent two weeks with the national team [of Ghana] and there his condition could not be monitored. He left Bucharest early to get treatment in Munich.”
Heldt, however, said Boateng would be fit for their league game against Stuttgart hoping a win would ease some pressure on coach Jens Keller, especially after his team squandered a two-goal lead last week to draw 3-3 with Eintracht Frankfurt.
“The statistics regarding his knee demand constant checks but Kevin has already given the green light for the game against Stuttgart,” Heldt said. “He will be ready to play, 100 percent.”