A consortium interested in a takeover of West Ham United, which is backed by former defender Rio Ferdinand, has held talks over the control of the London Stadium.
Now talks with the London Legacy Development Corporation over the former Olympic Stadium have taken place.
West Ham have leased their home from the LLDC since 2016.
Former Queens Park Rangers chief executive Philip Beard, who is fronting the bid, said in a statement: "We genuinely believe that the club, stadium and park will thrive when the stakeholders are all pulling in the same direction.
"The only thing holding us back for now is the reluctance of the club's owners to engage in constructive and realistic negotiations.