Leeds United have signed Aston Villa defender Stephen O'Halloran on a month's loan.
O'Halloran (left) has joined Leeds on loan, while Parker is off to Darlington (Getty)
The 20-year-old, who has been capped twice by the Republic of Ireland, has yet to feature in Villa's first team.
O'Halloran, who has had previous loan spells with Wycombe and Southampton, will be in the Leeds squad for Saturday's game at Swindon.
Meanwhile, United left-back Ben Parker, 20, has joined League Two side Darlington on loan, also for a month.
O'Halloran made 14 appearances for Wycombe while on loan last season, and played one game for Southampton in the Championship in January this year.
He has also represented his country at youth levels, while his two senior appearances came against Bolivia and Ecuador in 2007.
Parker leaves Elland Road for Darlington for a month having made 15 appearances for Leeds this season.
He made his debut in the Carling Cup tie at Macclesfield after spending the whole of last season on loan at Bradford City.