David Moyes has turned down seven jobs since being sacked by Manchester United on 22 April.
Moyes, 51, was dismissed less than 10 months after taking over as Sir Alex Ferguson's successor.
Celtic are among the clubs thought to have expressed an interest, but the Scottish champions have appointed Ronny Deila as Neil Lennon's successor.
Moyes was linked with a move to Germany at the end of his contract at Everton and has not ruled out a move abroad.
Moyes, who had originally signed a six-year contract at Old Trafford, said recently: "It was unfortunate I wasn't given more time to succeed."