NewRiver REIT said it had signed a shareholder agreement to complete the formation of a new joint venture with Bravo Strategies III.
A potential tie-up was first announced in May.
The venture would acquire and manage a portfolio of retail parks in the UK and, under the terms of the shareholder agreement, NewRiver had been appointed as its asset manager.
NewRiver REIT said a previously-announced deal to acquire four retail parks from Zurich Assurance for £60.5m had now been completed by the JV.
At 8:30am: (LON:NRR) NewRiver Retail Ltd share price was +1.1p at 188.9p