Eden Hazard's younger brother, Thorgan, is on Chelsea's radar, according to Lens sporting director Antoine Sibierski.
The 19-year-old winger has played only 11 times for the French Ligue 2 club and has just one year remaining on his contract.
But having already this summer acquired one Hazard, Chelsea could be ready to make it a family affair at Stamford Bridge.
"I've since learned that Chelsea are interested in his possible arrival," Sibierski told La Voix du Nord newspaper of Thorgan.
"I can understand why a player would want to leave Ligue 2 to go to Chelsea. We're in discussions.
"Now, like in every transfer with a year left on his contract, it must be paid for. There are also compensation fees for training him."