Free agent former Ireland international striker Leon Best is on trial with the Blues and starts for Town’s U23s in this afternoon’s first home game of the season against Birmingham at Playford Road (KO 1pm).
The 29-year-old was with Rotherham last season and scored against the Blues in the Millers' 1-0 victory at Portman Road in March.
Much-travelled Best, who was released by the South Yorkshire club at the end of 2015/16, was recently in talks with League One Port Vale but the League One club confirmed that the deal had broken down at the end of last week.
Prior to his time with the Millers, Best spent time with Notts County as a youngster before moving to Southampton's youth set-up from the Magpies like David McGoldrick.
The pair were both in the Saints U18s side the Blues defeated in the 2005 FA Youth Cup final.
Best, who is 6ft 1in tall, subsequently moved on to QPR (loan), Sheffield Wednesday (three loans), Yeovil (loan), Bournemouth (loan), Coventry, Newcastle, Blackburn, Derby (loan) and Brighton (loan) before joining Rotherham in November 2015. Last season he scored four goals in 10 starts and six sub appearances.
The Nottingham-born frontman has won seven full Ireland caps in addition to making appearances at U17, U19 and U21 levels.
Speaking on talkSPORT earlier today, manager Mick McCarthy, who is at this afternoon's game with assistant Terry Connor, said he has adding a couple of players in his sights before the transfer window closes at the end of the month, who would be loanees or out of contract players.
U23s: Crowe, Emmanuel, Kenlock, Blanchfield Digby, T Smith, Varney, McDonnell, Best, Dozzell, McLoughlin. Subs: Robinson, Marsden, C Smith, Patterson, Morris.