Red Bull Leipzig forward Christopher Nkunku reportedly had a 'secret medical' with Chelsea this summer ahead of a potential move before the start of 2023-24.
The Frenchman underwent tests in Frankfurt in August, with a Chelsea orthopedist present, as the Blues look to steal a march in the hunt for one of Europe's top young marksmen, according to German outlet Bild.
Nkunku already has six goals and an assist this season after a breakout campaign in 2021-22, which saw him bag 20 goals and 15 assists in the Bundesliga.
In total last term, Nkunku managed 35 goals and 20 assists in 52 games in all competitions, including a hat-trick in his side's eventful 6-3 loss to Manchester City in the Champions League.