These four players are Simon Brown, Amadou Konte, Antonio Murray and Paul Dalglish.
Midfielder Antonio Murray wants to return South as his girlfriend can't settle in Scotland and Hibs boss Mowbray has given him the green light.
Murray went for a trial with Wycombe Wanderers earlier this month but failed to make an impression
Paul Dalglish spent four days last week on trial with US side Dynamo after apparentley being told he can leave Easter Road, the Dynamo coach Dominic Kinnear said:
"We're looking at him, He's impressed for four days."
There's also rumours doing the rounds that Simon Brown has been told he can leave after he was dropped from the squad on Saturday, even though he started the season as no1, its thought it's due to discipline reasons.
He was apparently seen storming out of the stadium on Saturday up at Inverness after a falling out with Tony Mowbray.
Brown was signed from Colchester United.
Amadou Konte is the fourth and final player that may be about to leave, it is thought he has jetted out to AFRICA for a trial with an unnamed team, the player has never made an impression at Hibs.
Hopefully with these players leaving Tony Mowbray will be allowed to add more players to the squad, he has already signed Rob Jones from Grimsby and Merouna Zemmama from Raja Casablanca. Hibs are also on the verge of signing Shelton Martins from Darlington.