Allianz beat rival bids from Italy's Generali and Dutch insurer NN, sources familiar with the matter told Reuters on Thursday.

Aviva boss Amanda Blanc, who joined the firm as CEO in July 2020, has been selling assets at pace to focus on the life and general insurer's core businesses of Britain, Canada and Ireland. Aviva also has joint ventures in China and India.

"The sale of our Polish business is an excellent conclusion to the refocusing of our portfolio announced just eight months ago," Blanc said, adding that the sale of the eight businesses would generate 7.5 billion pounds ($10.31 billion) in cash.

Allianz, which first entered the Polish market in 1997, is Europe's biggest insurer.

"We are delighted to further strengthen visibility of the Allianz brand in Central Eastern Europe and pursue our successful growth strategy in the region," Allianz CEO Oliver Baete said in a separate statement.

Allianz said the deal would make it the number two in central and eastern Europe in terms of operating profit. It has several other businesses in the region, including Russia and Ukraine.

In Poland, the deal will elevate Allianz to number five in gross written premium, Allianz added.

Investors are hoping for bumper cash pay-outs from Aviva's sales spree.

JPMorgan Cazenove analysts said Aviva was one of its key overweight insurance stocks in Britain, citing "an attractive capital return/restructuring story".

The Poland sale price topped analysts' expectations after the three bidders this week were given an opportunity to improve binding bids submitted on Monday, sources told Reuters.

Allianz is also buying Santander's minority stake in the Aviva Poland business, bringing the total value of the transaction to 2.7 billion euros, Aviva said in a statement.

Santander will retain a 49% holding in the business's life and general insurance joint ventures, Aviva added.

($1 = 0.8490 euros)

($1 = 0.7274 pounds)

(Additional reporting by Pamela Barbaglia; editing by Rachel Armstrong and Jason Neely)

By Carolyn Cohn