The former Rangers defender says Barton's suggestion he wants to prove himself as the best player in Scotland could make life difficult for him.
Former Rangers defender Olivier Bernard has told the Scottish Sun that Joey Barton will have a target on his back next season because he has said he wants to prove that he is the best player in Scotland.
Barton signed a two-year at Rangers earlier this week after rejecting a stay at Burnley, where he was named player of the year and also voted into the Championship team of the year as he helped the Clarets to automatic promotion.
Upon signing his contract at Ibrox Barton made a bold statement of intent, proclaiming that one of his main personal ambitions was to establish himself as the best player in Scotland.
Bernard, who spent a single unsuccessful season at Rangers a decade ago, warned the former England international that he may have set himself up for a fall with those words, as he will be the player that every opponents wants to take down.
The former French full-back told the Scottish Sun: "It is important he remains cool at all times because everyone will want to prove himself against Joey now he says he wants to show he is the best player in Scotland.
"The Celtic games will be massive, but every time he steps on to the pitch his opponents will want to test him to see if he can control his temper.
"He’ll know what’s coming his way because Joey is the sort of player who likes to bring big-name opponents down a peg or two. He can expect a taste of his own medicine."
Barton's controversial side may have settled down in recent years of his career, but he still has a footballer's ego and he will want to establish himself as the star of the show north of the border, and not just at Ibrox.