The Glazer family have reportedly not made contact with Sir Jim Ratcliffe more than a week since the multi-billionaire announced his interest in buying Manchester United.
Ratcliffe, who is worth an estimated £9.8billion, has made his willingness to open negotiations about purchasing United from the Glazers known.
However, despite the American tycoons looking for further investment to help Old Trafford's redevelopment, there has been no indication that they will give up full control of the club, according to ESPN.
The Glazers are seeking further investment to help with the redevelopment of Old Trafford
Ratcliffe tried to buy Chelsea earlier this year after submitting a £4.