Goalkeeper Tomasz Kuszczak has signed for Birmingham after failing to agree a new deal with Wolves.
Former Albion shot-stopper Kuszczak was back-up to Carl Ikeme at Molineux last season and played 13 times.
Earlier this week, Jackett claimed negotiations with the Polish international were ongoing, having started in May.
But. with Blues offering a two-year deal, 33-year-old has decided to join his third West Midlands club.
Kuszczak was at times erratic in a Wolves jersey but on the whole he impressed between the sticks, particularly during an 11-game spell covering the injured Ikeme in February and March.
During that run he kept four consecutive clean sheets and six in total, over his 13 matches.
His departure leaves Jackett's goalkeeping department looking thin, with just Ikeme left with first-team experience.
Aaron McCarey is currently suspended pending an FA investigation after he failed a drug test for a non-performance enhancing substance.
McCarey faces a likely six-month ban if the allegations are proven. Youngster Jonathan Flatt may be given a chance to step up, when Wolves kick off their pre-season campaign next week.Subscribe to our Newsletter