Lamont has been capped 26 times for Scotland
Glasgow Warriors have re-signed free agent Rory Lamont after
the Scotland back left French club Toulon
The 29-year-old has signed a deal with the Warriors until May 2014, having left Glasgow in 2007.
"I enjoyed my seasons with Toulon, but the time was right for a change, and I'm delighted this opportunity came up," said Lamont.
Coach Sean Lineen added: I've always been a massive fan of Rory as a player and a person."
Lamont can be registered as an additional player in Glasgow's Heineken Cup squad but will not be included in the squad for Sunday's RaboDirect Pro12 match against Newport-Gwent Dragons.
Capped 26 times, the former Sale player decided to leave France after growing frustrated at a lack of playing time and to boost his international aspirations.
He said: "I'm absolutely delighted to have rejoined Glasgow Warriors and I can't wait to get back to work with the squad and build on the fantastic results they've achieved in the first part of the campaign.
Glasgow Warriors coach
“He's an ambitious player, and it speaks volumes for how we're beginning to be perceived that he feels he can achieve those ambitions here”
"I owe a massive amount to this club. They gave me my first real break in the professional game, and I learned a huge amount during my first spell here.
"Having now experienced rugby in both England and France, I feel I'm returning as a better, more rounded player, and it's a hugely exciting time to be coming back into the mix.
"I'm really thrilled to be back. I've got some fantastic memories of my first spell here, and I'm looking forward to making some new ones. I want to help the Warriors achieve success, and make the strongest possible case for Scotland selection."
Lineen added: "I'm chuffed to bits to have got Rory signed up and I'm really excited about the contribution he'll make over the next few years.
"He's a real quality addition to the squad at a busy stage in the season when the big games are coming thick and fast.
"He's an ambitious player, and it speaks volumes for how we're beginning to be perceived that he feels he can achieve those ambitions here."