Sunderland are reportedly considering a move for Leeds United goalkeeper Robert Green.
The Black Cats will reportedly step up their attempt to sign Green, as Grayson wants an experienced first choice goalkeeper ahead of the next season.
Jordan Pickford joined Everton last month, and Vito Mannone also followed him out of the Sunderland exit door on Wednesday when he signed a three-year deal to complete his move to Reading.
Max Stryjek, who played as the goalie for Sunderland against Hartlepool United on Tuesday night, is being considered as a capable back up option.
Grayson initially wanted QPR goalkeeper Alex Smithies, but his £8 million price tag has forced him into looking for options elsewhere.
The Northern Echo reports that Green is facing an uncertain future after the Elland Road club signed Felix Wiedwald earlier this month.
Thomas Christiansen is keen to make Wiedwald his number one, which will certainly result in Green moving out of the club.
Sunderland will be looking to lure Green, who will turn 38 in January, with an offer of regular first team football. The Black Cats will be reluctant to pay more than £1 million for the veteran goalkeeper.
In other news, Report: Everton planning £15m move for relegated forward