Chelsea are raising more funds through player sales with Genk having signed Ike Ugbo for £6 million ($9m) as Lokomotiv Moscow make an approach for Tino Anjorin.
Ugbo saw his transfer to Belgium delayed after an approach from Marseille, but they couldn't come to an agreement with the Blues.
Genk will pay an initial £3m ($4m) but Chelsea can earn up to £6m should all the add-ons be met, and they will earn 20 percent of any future sale.
What's happening with Anjorin?
The 19-year-old has drawn the attention of Lokomotiv Moscow's head of sports and development Ralf Rangnick, who is looking for youngsters to build his club around.