Britain's HSBC, Poland's PKO BP and France's BNP Paribas are favoured bidders in the takeover of BZ WBK, the Polish subsidiary of AIB, the Polish press has reported.
AIB, which controls a 70.36% share in Bank Zachodni WBK (BZ WBK), is selling off the asset as part of a restructuring plan to cover massive losses from bad property loans.
Analysts value BZ WBK at about 10 billion zloty (€2.4 billion).
AIB is expected to create a short-list of candidates later this week, according to press reports.
Poland's Treasury Minister Aleksander Grad said last month that state-controlled bank PKO BP, Poland's largest bank, was keen to acquire BZ WBK and that a successful bid could produce a regional banking giant.
According to UBS analysts, PKO BP is favoured by AIB in the takeover. Unconfirmed press reports said HSBC was also mentioned as an attractive bidder.
Spain's Santander bank, Poland's Pekao owned by Italy's Unicredit and US-based Apex Partners have also expressed interest in acquiring BZ WBK, according to Poland's Rzeczpospolita and Dziennik Gazeta Prawna dailies.