Bayern Munich's defender Josip Stanišić will be sidelined for several weeks after tearing a collateral ligament in his right knee during a training session on Monday. The injury, which required surgery, will prevent him from participating in the upcoming Bundesliga opener against Wolfsburg and two UEFA Nations League matches for Croatia. Stanišić, who had a successful loan spell at Bayer Leverkusen last season, was expected to play a key role in Bayern's defense this season. In his absence, Sacha Boey, Joshua Kimmich, and Konrad Laimer are potential replacements. Meanwhile, Leroy Sane has returned to training after recovering from groin surgery but continues his individual recovery program. Bayern is set to begin its Bundesliga campaign this weekend, aiming to reclaim the title from Bayer Leverkusen.