The 25-year-old failed to impress for Bayern Munich last season, but has managed to become a key player under new head coach Pep Guardiola this season.
“They held a conversation with Boateng to tell him that he would not be at Bayern much longer if he continued to play like he played last season,” Former Bayern Munich II coach Scholl told ARD.
“He has made a big transformation since and you can hardly recognise him any more. When players show a willingness to change and to improve, that shows their class.”
Boateng joined Bayern Munich from Manchester City in the summer of 2011.
