Chelsea are interested in RB Leipzig defender Nordi Mukiele.
Foot Mercato says Chelsea have made contact with Mukiele's minders about a move to London.
Chelsea made their move after learning of PSG's push for the fullback.
PSG are offering €15m to sign Mukiele.
And the Blues are prepared to tempt RBL by making a swap proposal for Mukiele with Timo Werner to go in the opposite direction.
It's a move which has the backing of Werner, with the Leipziger Volkszeitung reporting the Germany striker wants to return to RBL this summer.