The club exiled the supporters' groups from the Parc des Princes and banned them from all PSG matches in what was known as Plan Leproux. It made PSG pay the price in terms of atmosphere, with one of Europe's most feared venues now subdued. For their part, former Virage Auteuil supporters formed the Collectif Ultras Paris (CUP) in February 2016, with the aim of reclaiming their place at the stadium. In October 2016, after a six-year absence, the club agreed to their return. Grouped in the Auteuil end of the stadium, the CUP currently is the only ultra association officially recognized by PSG. The ultra movement has also started to come back to life in the Boulogne stand. New groups Block Parisii, Paname Rebirth and Résistance Parisienne are trying to convince the club of relaunching the Kop of Boulogne.