Birmingham have signed midfielder Gary Dicker and winger Pat Kavanagh. Dicker, 20, joins on a six-month loan deal from Irish side University College of Dublin after impressing during a trial at the club.
Kavanagh, 21, had also been on trial with the Championship club and made two appearances for City's reserve side.
He was a free agent after parting company with the University College of Dublin in November and has signed a six-month contract with Blues.