April 8 (Reuters) - Austria's Raiffeisen Bank

International said on Wednesday it plans to acquire

smaller Vienna-listed lender Addiko for 23.05 euros

($26.88) per share.

* RBI said it would make an offer for all outstanding

shares of Addiko, in a deal valued at 444.6 million euros, based

on Reuters calculations.

* The offer price represents a discount of over 11% to

Addiko's closing price of 26 euros on Wednesday.

* Once submitted, the acceptance period for the offer will

run for 10 weeks, RBI said.

* Following completion, the transaction would have a

negative impact of about 45 basis points on RBI's common equity

tier 1 ratio, excluding Russia.

* RBI has a market capitalisation of $15.3 billion, compared

with Addiko's valuation of $587.8 million.

* The move follows another deal where RBI last month agreed

to buy Istanbul-listed Garanti BBVA's Romanian

business for 591 million euros ($689.40 million).

($1 = 0.8574 euros)