Chelsea are busy working on a deal to sign Borussia Dortmund youngster Youssoufa Moukoko.

The teenager striker is a hot property in Europe, despite only recently getting into the Dortmund first team.

With a deal for Christopher Nkunku from RB Leipzig all but done, Chelsea are turning their attention to another Germany-based player.

According to Sky Germany, the Blues and Dortmund have already spoken regarding Moukoko.

Dortmund are not in the mood to sell, and it will take a giant offer from Chelsea to convince them.

The Blues are also on the trail of RB Leipzig defender Josko Gvardiol.