Sheikh Jassim bin Hamad al Thani and Sir Jim Ratcliffe still want to buy Manchester United despite the sale process dragging on for 10 months as well as on and off-field problems at the club.
The Qatari banker Sheikh Jassim and British industrialist Ratcliffe have made bids which value United at about £5bn, but the Glazers have been holding out for higher offers.
One source has said: "The longer they demand more money, the more the very asset they are trying to sell is being devalued."
The Glazers announced a strategic review in November last year which they said could lead to a sale. United chief executive Richard Arnold confirmed on Monday in a staff meeting that the process was ongoing.
