Deen has only made 18 appearences for the Shots since his move from Peterborough United last summer and since he has been unable to secure a regular first team place, is not not required by the club.
The club have also confirmed that defender Tobi Jinadu will remain available for transfer or loan, while right-back Tarkan Mustafa who last played for the club against Scarborough last October, is remaining on loan at Billericay Town.