Tom Isaacs has left Gloucester to join hometown club Cardiff after just four months at Kingsholm.
The 27-year-old centre joined the Cherry and Whites in the summer after five years with the Ospreys, but has only featured on five occasions this term.
Former Gloucester boss Nigel Davies signed Isaacs when building his squad for the 2014-15 campaign, only to be sacked in May and replaced by David Humphreys.
Isaacs admitted the regime change left his chances sorely limited at Kingsholm this term.
"I'd like to thank everyone at Gloucester Rugby for their support during my time in England," said Isaacs, after completing a deal with the Blues to run until 2016.
"Gloucester is a great traditional rugby club but, with a change in rugby management after my signing, opportunities have been limited this season.
"I want to be playing regular rugby and couldn't turn down the chance to return to my home city.
"I played all my rugby growing up for Ysgol Glantaf and Llandaff North before time with Cardiff RFC and studied at Cardiff University."
Blues boss Mark Hammett said Isaacs' arrival will add vital depth to his midfield options.
"Tom strengthens our squad and will add another dynamic to our midfield options," said Blues rugby director Hammett.
"We've been hit hard in the centre, with injuries and international call-ups, and so Tom's signing is a very important one.
"He is a strong ball carrying centre who can make things happen and I've been impressed by his tremendous attitude towards both training and games.
"We're excited to welcome him back to his home city and look forward to seeing him in action for Cardiff Blues."
Gloucester boss Humphreys admitted the Aviva Premiership club were happy to help Isaacs seek a fresh start.
"Tom has been the complete professional in his time at Gloucester," said rugby director Humphreys.
"He's not had as much game time as he would have liked, and Cardiff are looking to add some depth to their playing squad.
"It's a great opportunity for Tom to further his playing career and everyone at the club wishes him all the best for the future."