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Justin Marshall has warned his former All Black teammate Dan Carter that his switch to French rugby is likely to have few bumps along the way.
Carter will join French side Perpignan in December for six months but Marshall, who plays for French club Montpellier, has warned it won't be a cakewalk.
"Dan's going to Perpignan (where there's) not a great deal of foreign players," the halfback told The Times.
"He's got the language barrier as well so it's going to take some time for him to adjust. There's going to be a bit of a reality check for him, so it will be interesting"
Marshall is a veteran of not only New Zealand rugby, but Europe's Guinness Premiership, the Magners League and now Europe's Top 14 competition.
"First of all, you've got to meet the players, you don't know anybody, you don't know who likes to play golf or go for a coffee," Marshall said.
"You don't know the way they play the game, you don't know how the team's going to train."
- NZPA