Ben Parker, Gavin Rothery, and Scott Gardner have all been offered new contracts by the club.
Gavin, who has fought his way back from injury, and Scott were regulars in the reserve team last season.
Former England youth international Ben spent the campaign on loan at Bradford City.
The Leeds-born defender featured on the club's pre-season tour of Norway before joining the Bantams on the eve of the campaign.
He made 41 appearances for Bradford, playing at both left back and on the left side of midfield.
The club have also offered a first professional contract to young striker Tomi Ameobi.
Tomi featured in the under-18s and the reserves last season.