Bayern Munich honorary president Uli Hoeness has questioned whether Germany forward Jamal Musiala will "regain the performance level he once had."
Musiala, who made his debut for Germany aged 18 and was the joint-leading goal-scorer at Euro 2024, collapsed twice in four days during pre-season matches.
It was later revealed the 23-year-old had been diagnosed with absence seizures due to a type of "neurological dysfunction."
Musiala, who has scored 71 goals in 235 appearances for Bayern in total, has not played for the club since September due to a hamstring injury but has rejoined first team training.
Hoeness told Bavarian network BR24's Sunday Regulars' Table programme: "We are facing a dilemma in this case, as he is suffering from an illness that cannot simply be cured, but it can be controlled to a certain extent with the use of medication."
He said there was still uncertainty over Musiala's future, adding: "Whether he'll ever regain the performance level he once had..."
Musiala, who was born in Stuttgart and spent time in Chelsea's academy after moving to England as a youngster, is under contract at Bayern until 2030.
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Hoeness stressed Musiala's wellbeing was the club's main concern and they would continue to support him.
"Imagine if FC Bayern were to question his contract now and say, 'What he's capable of now isn't what's stipulated in the contract,'" Hoeness said.