Town will complete the signing of Korona Kielce defender Piotr Malarczyk before the transfer window closes next week, according to reports in Poland.
The 24-year-old is understood to have a clause in the one-year contract he signed as recently as June which means he can move for 50,000 Polish Zloty, just over £8,500, although he is actually claimed to be worth around £350,000.
Malarczyk, who was previously interesting another Polish side, Jagiellonia Białystok, has been with his hometown club, who play in the Polish top flight, throughout his career.
He made his senior debut in 2009 and has now made 131 appearances, scoring eight goals and is their current skipper. He has been capped by Poland at U19, U20 and U21 levels.
Speaking in an interview with Polish website 24x45.info last week, Blues keeper Bartosz Bialkowski revealed that the Town management had asked him about Malarczyk, who he described as a "strong, determined and ambitious defender".
Bialkowski also spoke about his father, who sadly died over the weekend having been ill for some time. The keeper flew back to Poland ahead of Saturday's game at Preston.
Malarczyk plays either as a centre-half or a right-back with manager Mick McCarthy revealing that he was targeting a player in that mould earlier in the month.
The Blues made multiple offers for Hearts youngster Jordan McGhee but it seems have now moved on to another target.