Teenage winger Luke Hubbins has put pen to paper on a six-month extension to his contract.
The 19-year-old right-sided player's deal now runs until 1 January 2012.
Academy product Hubbins, who hails from WeoleyCastle, has been with Blues for eight years.
He scored the winning goal in the FA Youth Cup quarter-finals a couple of years ago and was shortlisted for the club's Young Player of the Year award in 2010.
The former Cadburys Athletic junior had a loan spell with NottsCounty last season and although he didn't make a league appearance did make his full senior debut in the Carling Cup at Watford.
Previously Hubbins has been described as 'a wideman with pace and the skills needed to beat a man, who is a really bright prospect.'