Allan McGregor's agent has confirmed that the Scotland goalkeeper is closing in on a switch to Premier League newcomers Hull City.
The 31-year-old currently plies his trade for Besiktas after joining them on a free transfer from Rangers last summer.
However, he has failed to settle into life in Turkey and is seeking a return home, with Tigers boss Steve Bruce keen on landing the shot-stopper.
McGregor's agent Dave Baldwin said in The Sun: "Negotiations with Allan are progressing well and there are no major obstacles to a deal being done.
"Allan is keen to play in the Premier League and very keen to play under Steve Bruce, so now we just have to push the talks forward."
It is believed that Mignolet has told Paolo Di Canio he will not sign a new contract at the Stadium of Light and wants to leave in order to boost his 2014 World Cup ambitions.
Liverpool could be in need of a goalkeeper given that speculation continues to link their current number one Jose Reina with Barcelona.
Sunderland, though, will not be keen to sell Mignolet, who was their Player of the Year in the 2012/13 season.
But the 25-year-old, who has also been linked with Arsenal, has only two years remaining on his contract and Sunderland will know his value will decrease as time drags on.
However, the North-East club would still want at least ?9m from Liverpool, who have also been linked with Stoke City's Asmir Begovic.
