The 30-year-old will join the Tigers on a two-year deal starting next season and is thought to be key to coach Tim Sheens’ plans.
Anasta has made 128 apperances for the Roosters since signing from Canterbury in 2006 and also has four caps for Australia and ten NSW Origin appearances under his belt.
Able to lock or five-eighth, it is likely Anasta will team up with Benji Marshall in next year’s halfback combination for the Tigers
“I look forward to making a big contribution to an already strong and talented playing group under Tim Sheens over the next two years ,’’ Anasta said.
“While I look forward to the challenges ahead, my immediate priority remains focused on this season. There’s a great young squad here at the Roosters and I have a massive ambition to make 2012 a memorable year for the club.
“I am incredibly proud to have captained such a special club.’’
Tigers coach Sheens has struggled to find a long-term successor to Scott Prince, who helped the Tigers to 2005 premiership glory.