Jerome Boateng says Franck Ribery must learn to control his temper . He says if the Frenchman does not keep his cool , it could cost his team-mates . Beckenbauer expressed a similar concern over Franz Beckenbauer . Meanwhile , he has heaped praise on to Bayern head coach Pep Guardiola . Guardiola 's contract at Bayern is set to expire next year .
Franz Beckenbauer says Franck Ribery must learn to control his temper . He says if the Frenchman does not keep his cool , it could cost his team-mates . Beckenbauer expressed a similar concern over Jerome Boateng . Meanwhile , he has heaped praise on to Bayern head coach Pep Guardiola . Guardiola 's contract at Bayern is set to expire next year .