LaLiga giants Atletico Madrid are believed to weighing up a move for the brother of Eden Hazard, who has impressed in the Bundesliga.
According to German publication Bild, Thorgan Hazard has the caught the eye of Los Rojiblancos following his performances this season.
The 25-year-old's current deal at Borussia Monchangladbach expires in 2020, and it is believed that he is not accepted an extension.
Spanish outlet Marca claim that with Thomas Lemar struggling to settle in Madrid, Hazard is seen as like-for-like replacement on the left wing.
Hazard, who is already a Belgium international, has registered 11 goals and six assists in 14 appearances for the Bundesliga outfit this season.
Reports in Italy claim that Diego Simeone's men are also looking at Brescia's Sandro Tonali, who has been dubbed the next Andrea Pirlo.