The English Rugby Union is to prevent any potential exodus of its leading players after the World Cup by extending its policy of not selecting any overseas-based players for England for the next two Cups.
Any England-based player considering a move overseas next season is to be left in no doubt that it will bring a premature end to their England career.
High-profile players such as Manu Tuilagi and Danny Cipriani have already attracted interest from big-spending French clubs this year, while David Strettle withdrew from England's World Cup training squad to join Clermont Auvergne in June.
The RFU and Premiership Rugby are in advanced negotiations for a new long-term agreement over the release of England players and funding and it's understood extending the selection policy will form a central plank of the new deal, covering the next two Cups.
The RFU's strict policy, brought in after the last Cup, has ensured Stuart Lancaster's squad has players solely based in the England Premiership for the first time since 1999. That follows Lancaster's decision not to invoke the "exceptional circumstances" clause in the policy, despite mounting pressure to include French-based players Steffon Armitage after another outstanding season for Champions' Cup winners Toulon, and Clermont fullback Nick Abendanon who was named European player of the year.