Borussia Dortmund have taken an interest in Fiorentina defender Nikola Milenkovic.
The Serbian stopper has become one of Serie A's best defenders in recent seasons.
Liverpool and Manchester United have recently made contact with the player's agent.
And according to Sky Sports, Dortmund have also held initial talks over a potential move.
Milenkovic will become a free agent in the summer of 2022.
His current transfer value is £33m, but it is unclear if the fee would be reduced given Milenkovic's expiring contract.
At just 23, Milenkovic is seen a player with huge potential after after already making over 100 appearances for Fiorentina.
