On-loan at HSV from Tottenha, the teenage Croatian has been linked with Bayern Munich given his form this season.
Vuskovic told Tportal: "Yes, I've heard about that. I don't know what will happen; we'll talk about it in the summer.
"Tottenham have also inquired, as I'm under contract with them until 2030. After my potential participation in the World Cup, we'll see what happens next and how we proceed."
Hamburg does not have an option to buy him. Nevertheless, Vuskovic can imagine staying next season, also considering his brother's current doping ban will be over by then.
He added: "As far as I'm concerned, I wouldn't have any problem staying at HSV. Mario will be able to play again in the autumn, then I would have the chance to play with him, which is my biggest wish at the moment."