Town boss Mick McCarthy is showing interest in former Ireland international defender Richard Dunne, according to a report in Ireland.
The Irish Sun claims McCarthy, who gave Dunne his Ireland debut back in 2000, wants to bring the former Manchester City, Aston Villa and Everton man to join the Blues' promotion push.
Dunne is said to have a couple of options following his release by QPR at the end of last season, although he is also weighing-up whether to hang up his boots at the age of 35.
The Blues moving for another senior centre-half seems unlikely with Christophe Berra and Tommy Smith established at the heart of the defence and skipper Luke Chambers, currently operating at right-back, also primarily a central defender.
Town are also close to bringing in Piotr Malarczyk from Korona Kielce, a central defender or right-back.
The 24-year-old Pole is understood to have travelled to Ipswich yesterday with talks regarding his £8,500 switch believed to be ongoing.