Borussia Dortmund are prepared to accept a €100 million ($121 million) offer for Jadon Sancho this summer.
Sancho is under contract with Dortmund until 2023.
Sancho was tipped to leave Dortmund last summer but a deal never materialized.
Michael Zorc said on Saturday on ARD TV that "under certain conditions" Dortmund would let Sancho leave this summer.
"Already last year, we had a gentleman's agreement with Sancho," Zorc said.
Speaking to Sport 1 on Sunday, Zorc added: "There are certain conditions which need to be met so Jadon can leave the club. Timing and fee have been and still are the deciding parameters."