Former Town defender James Collins has announced his retirement from football having left the Blues at the end of the 2018/19 season.
Collins joined Town in January 2019 after two spells on trial, first under Paul Hurst and then Paul Lambert, and made six starts in an injury-hit spell.
The 37-year-old former Wales international spent much of his career with West Ham where he had two spells and also played for Aston Villa and Cardiff.
"This will not come as a surprise to most people as I haven't played for a season now," he posted on Instagram. "But with a heavy heart I've decided to officially retire from football.
"After a lot of thought I believe this is the best thing to do so I can draw a line under my 20-year career and move on to my next chapter in life.
"I would like to thank all the players and fans at all the clubs I played for.
"Also all the players, staff and fans of Wales - as a boy to play for my country was a dream and I'm very proud to have gone on to get 51 caps and loved every second.”