Borussia Dortmund general manager Michael Zorc has refused to confirm or deny whether the German club have agreed a deal for Chelsea's Kevin de Bruyne.
A spate of reports this week have suggested that Dortmund are on the verge of landing the 21-year-old - something Zorc refused to comment on.
"I am not going to either confirm or deny this (agreement)," Zorc told Bild. "Kevin de Bruyne is under contract with Chelsea FC, he is a good player currently on loan at Werder Bremen."
Dortmund are in the market for a replacement for the out-going Mario Gotze, who will join rivals Bayern Munich in the summer. De Bruyne is said to be at the top of their list.
The Blues were said to be keen on using the Belgian youngster - who is yet to make a senior appearance at Stamford Bridge since joining from Genk in 2012 - as part of a deal for Bayer Leverkusen's Andre Schurrle.
De Bruyne himself was also tight-lipped when asked about his future.
"I am receiving a lot of offers for next season," he said. "But I am not yet aware where I will play next term."
Dortmund have also been linked with a move for Ajax starlet Christian Eriksen, who confirmed yesterday that contact had been made between the two clubs.
The paper reports Dortmund have agreed a five-year contract with De Bruyne, but Chelsea are holding out for an option on Lewandowski before agreeing to sell up.
If they are unable to come to an agreement, the Stamford Bridge-based club will look to double the £7 million they paid for De Bruyne which would then put the deal in doubt.