"I think it’s a bit strange that Courtois can decide for himself whether he can come back," Casteels said on Belgian podcast MidMid.

Thibaut Courtois’ decision to return to Belgium duty has not been met with universal approval in the Red Devils camp.Real Madrid’s No.1 is currently eighth on the all-time list of appearances for

Belgium goalkeeper Koen Casteels has quit the national team in protest at the impending return to the squad of rival Thibaut Courtois.

Belgium's No.1 goalkeeper, Koen Casteels, has made the surprising decision to step away from the national team.

Belgium's No.1 goalkeeper Koen Casteels has quit the national team in frustration over the decision to bring Thibaut Courtois back into the fold.

Belgium goalkeeper Koen Casteels has quit the national team in protest at the impending return to the squad of rival Thibaut Courtois.