Assura agreed to an improved 1.70 billion pound ($2.29 billion) takeover bid from a consortium of private equity firms KKR and Stonepeak Partners, marking the latest development in a protracted bidding war for the U.K. healthcare-property investor.

The boards of Assura and the U.S. consortium–known as Sana Bidco–finalized terms for a final offer on Wednesday. Under the deal, shareholders will get 52.1 pence in cash for each Assura share including declared dividends. This represents a 39% premium to Assura’s closing share price on Feb. 13, the day before the offer period began.