John Barclay has put speculation about his future to an end by agreeing a contract extension with Glasgow Warriors.

The flanker has signed a new deal that runs until the end of the 2012-13 season, with the option of a further year.

Barclay, who has 37 international caps, has made 126 appearances for Glasgow and has shown his versatility this season in playing at blindside and number eight, has said that he believes he will enjoy success at the club in the future.

"I'm delighted to be re-signing for the Warriors at a time when the club is really going places,” Barclay told Warriors’ official website.

"I've been part of Glasgow for eight years now, and the atmosphere and ambition around the club is the best I've ever experienced.

"It's always a big call to decide where your future lies, particularly when you've been with one club for a significant period.

"I've taken some time to think through the decision, and I'm convinced that it's the right one. Glasgow Warriors are going places and I want to contribute to that process.

"I'll be giving my all for (head coach) Sean Lineen and the rest of the coaches as we try to reach the RaboDirect PRO12 play-offs, and will be doing likewise when Gregor (Townsend), whom I know well from Scotland duty, takes over as head coach next season."

Outgoing coach Sean Lineen said that fans would be seeing the best of Barclay over the next year.

"It's been great to see John develop from an 18-year-old with all the right raw materials into a proper Warrior who, on his day, is right up there with the best in the business,” he said.

"At 25, he should be just starting to come into his prime, and I'm very pleased he's decided that Glasgow is the best place to continue his development and achieve what he wants to in the game."