Chelsea boss Andre Villas-Boas is a fan of the talent at Racing Genk.
Genk winger Kevin de Bruyne is a top target for AVB.
Ahead of their Champions League encounter, the Blues manager said: "Their league is not going so well for them and they are still getting used to playing with their new manager.
"But they still have good individual talent and they are a good team. I played them last season with Porto and won 3-0 away and 4-2 at home. But the results do not reflect the games.
"We cannot take it easy against Genk. We have to focus on the job in hand."