TWTD understands that former Crystal Palace, Arsenal, Charlton and West Brom winger Jerome Thomas is training with the Blues.
The 32-year-old is a free agent having left Palace at the end of last season. In September the Londoner was training with Hearts but the player and the SPL club failed to agree terms.
Thomas started his career with Arsenal’s academy but he made only one start and two sub appearances for the Gunners.
He moved to QPR on loan in 2002 before departing for then-Premier League Charlton on a permanent basis in 2004.
Four years later he joined Portsmouth, also then in the top flight, initially on loan, before a spell at West Brom between 2009 and 2013, which also included a stint on loan at Leeds.
He joined the Eagles in the summer of 2013 but made only four starts and eight sub appearances - one start and two sub appearances last season - before departing last summer.
The Blues are understood to have arranged a behind-closed-doors U21s friendly at some point this week and Thomas could well be involved.
Town lost a winger last week with Australian international Tommy Oar asking to have his contract terminated having failed to settle with the Blues. The 24-year-old is expected to join a club in China.