Chelsea are frustrated after Christopher Nkunku’s medical was made public last week.
The RB Leipzig star underwent a preliminary examination and the Blues were keen that nobody found out about their early transfer moves.
But the news was leaked that the medical happened a few weeks ago.
READ ALSO:Serie A: Embattled Pogba returns to Juve training pitch
Journalist Fabrizio Romano reports that all parties involved wanted to keep the discussions with Chelsea secret and the deal remains a long way from done.
Graham Potter’s side and the Bundesliga club are yet to agree a fee.
Nkunku, 24, apparently has a £53million release clause in his contract that Chelsea may have to trigger.