James Haskell has urged Danny Cipriani to chase a "once-in-a-lifetime opportunity" in France next season if excluded from England's Six Nations squad.
Haskell believes former Wasps team-mate Cipriani must not fall into the trap of "hanging on" too long in the hope of rekindling his England career.
Sale fly-half Cipriani is expected to be named in England's second-string Saxons squad, in a senior snub that could lead him to join Toulon in the summer.
George Ford, Owen Farrell and Stephen Myler are primed to be selected at fly-half ahead of Cipriani.
"I think the problem is you can be hanging on your entire life," former Stade Francais flanker Haskell said of Cipriani.
"Sometimes your face doesn't fit, or there's too much competition around, and you need to make the right decision to suit yourself and suit your game.
"I don't regret one minute going to France, it was one of the best experiences of my life.
"If I thought it would have affected my England chances, because the rules were different then, then I probably wouldn't go.
"If I was on the fringe of the squad looking to play rugby and I had a once-in-a-lifetime opportunity to go and play in France, you've got to go and play in France, haven't you?
"I think that's what you've got to do.
"But everyone is different.
"Only he knows what the England coaches are saying to him, only he knows his own situation.
"But I respect anyone who broadens their horizons, Toby Flood chose to go to Toulouse."