RB Leipzig forward Christopher Nkunku reportedly had secret medical checks with Chelsea in the summer - but the 24-year-old's €60million (£53m) release clause is not able to be triggered until next year.
Nkunku has a number of suitors across Europe after notching 35 goals in 52 games for Leipzig in all competitions last term. And the versatile forward has carried that rich vein of form into the new campaign, where he's already bagged six goals.
Chelsea were one of the club's who are interested in striking a deal with Leipzig for Nkunku, but the release clause that was inserted in the contract the forward signed back in June complicated a summer deal.