Former Blues midfielder Emyr Huws is on trial with Doncaster Rovers having left Portman Road at the end of last season.
According to the Doncaster Free Press, the 27-year-old is among a number of out-of-contract players to have trained with the South Yorkshire side managed by former Blues loanee Richie Wellens last week and who could feature in their first friendly against Rossington Main on Saturday.
Wales international Huws was was released in May after four and a half years at the club, having initially joined the Blues on loan from Cardiff in January 2017.
He impressed in the remaining months of that season, most famously scoring the third goal in the 3-1 win over Newcastle at Portman Road.
Huws signed on a permanent basis that summer on a free transfer but injury limited his involvement in the following campaigns and his exit comes as little shock.
Overall, the former Manchester City youngster made 43 starts and 12 sub appearances, scoring five goals.
Earlier in the summer, Huws was linked with a move to Colchester United.