I suppose it depends on how the new regime feel about picking those who play in England.
But, yes, I suspect that if he feels he'll continue to get international caps by playing for a Welsh region, he'll be off when his contract is up.
All of these "can't pick overseas players" or "you must have 50 caps to play overseas" ideas are all there to help the relevant nation's domestic club teams.
None of them want to bleed talent to richer nations, so leave the lure of international rugby dangling keep the players playing locally.
As soon as it doesn't suit the clubs or the relevant national team, then players will get selected wherever they play.
If it was a World Cup tomorrow and Pivac desperately wanted Biggar, Rowlands and Thomas Young in the squad, the guidelines about international selection would go straight out the window