CLEVELAND -- The Browns extended a contract tender Thursday to starting inside linebacker Craig Robertson as an exclusive-rights free agent.
Robertson started 14 games last season, his second with Cleveland. The 6-foot-1, 234-pounder finished with 89 tackles -- 63 solos -- and had three sacks and an interception.
An exclusive-rights free agent doesn't have negotiating power and must stay with a team if he's tendered. Robertson will make $570,000 next season.
Robertson missed two games with a knee injury. He started three games as a rookie in 2012 after he was signed to Cleveland's practice squad.
Also Thursday, kicker Billy Cundiff agreed to terms on a contract extension with the Browns.
Cundiff was eligible to hit the free-agent market next week, but he'll stay with the Browns. Terms of the deal announced Thursday were not immediately available.
Colts sign free agent LB D'Qwell Jackson
INDIANAPOLIS -- The Colts signed former Browns linebacker D'Qwell Jackson. Terms of the deal were not immediately available.
A second-round draft pick in 2006, the 6-foot, 240-pound linebacker has started 48 consecutive games and has 891 career tackles.
In Indianapolis, he will be reunited with former coach Rod Chudzinksi and running back Trent Richardson, both of whom began last season in Cleveland.