The forward was axed from the squad for the last three games by manager Gus Poyet after claiming he had been transfer-listed.
Forster has since buried the hatchet with Poyet and will replace fellow striker Liam Dickinson in the squad after his loan move to Peterborough earlier this week.
Poyet, who was a popular assistant manager at Elland Road for a year, has no fresh injury worries to contend with.
Defender Colin Hawkins remains the only absentee following his recent heel operation.
Winger Seb Carole, currently in his third spell with Brighton, will be hoping to face the team he joined from the Seagulls back in 2006. Carole made 52 appearances for United.