And Sunderland have much work to do following the club’s retained list.
It was announced that Max Power, Grant Leadbitter, Josh Scowen and Callum McFadzean amongst others were set to leave the Stadium of Light.
Goalkeeper Lee Burge remains on Wearside but Remi Matthews was not offered a new deal.
That means the Black Cats will be in the market for a new stopper.
Here, we take a look at the free agent and loan options available to Lee Johnson.
5. Keiren Westwood
The experienced former Sunderland goalkeeper is now a free agent after his contract at Sheffield Wednesday expired. Could a return to the Stadium of Light suit all parties?
Photo: Alex Pantling
6. Caoimhin Kelleher
Liverpool need to find first-team football for some of their hot prospects. Indeed, according to reports, Sunderland's League One rivals Ipswich Town want to sign Caoimhin Kelleher on loan. The Black Cats, however, are in the market for a stopper too - and the 22-year-old could prove to be the perfect option on a temporary deal.
7. Liam Kelly
Liam Kelly spent last season out on loan at Motherwell but parent club QPR may be tempted to send him out again next campaign.
Photo: Julian Finney
8. Simon Moore
The former Brentford and Cardiff City stopper is now available for nothing following his release from Sheffield United.
Photo: Shaun Botterill