Manchester United loanee Marcel Sabitzer will decide his future at the end of the season.
The midfielder is at the club for the second half of this season from Bayern Munich.
Roger Wittmann, Sabitzer's agent, has admitted that he cannot rule out a permanent stay for his client at United.
"At Manchester United we see Marcel from Leipzig again," Wittmann told Sport1.
"I'm very happy for him."
On a transfer, Wittmann continued: "We'll see when the time comes."
"He loves this English hardness," he added.
"It was clear from the start that the Premier League was a great fit for him.
"He's an aggressive player. He does exactly what he can there. And that's what's needed there."