RB Leipzig forward Christopher Nkunku has already completed a secret medical at Chelsea last summer, ahead of rumors he will join the Blues. View the original article to see embedded media. Christopher Nkunku has reportedly already complete a secret medical at Chelsea last summer, amid rumours the club are ready to break the bank for the RB Leipzig striker. Chelsea have been interested in Nkunku for some time, but couldn’t sign him last summer due to RB Leipzig’s unwillingness to sell. That could change in the coming months, with the German club now having a replacement in Benjamin Sesko. The…