UK REIT Hammerson has exchanged contracts to sell 51% of its interest in the O'Parinor shopping centre, Aulnay-sous-Bois, near Paris, to the National Pension Service of Korea (NPS), advised by Rockspring Property Investment Managers. The transaction amounts to EUR 217 mln, after costs of EUR 5 mln. NPS and Hammerson have agreed that NPS can purchase a further 24% interest in autumn 2011 at a price estimated at around EUR 106 mln.