Vincent Kompany would find an adequate back up if the Korean centre-half leaves in summer.
Should Kim Min-Jae leave the club this summer, Bayern would go for another centre-back in addition to Jonathan Tah.
Hiroki Itu014d is still sidelined for a lengthy period and Josip Stanišiu0107 is planned to cover both at centre-back and right-back.
Dayot Upamecano and Tah are expected to be the starting duo in defence next season.
Meanwhile, Leverkusen are playing hard ball with Bayer regarding the 29-year-old's transfer.
Die Rekordmeister, who are hoping to lure him to the club before the Club World Cup starts, could have to pay a 7-figure fee for his early release.