The Browns have extended a contract tender to inside linebacker Craig Robertson as an exclusive-rights free agent, a team spokesman confirmed.

Exclusive-rights free agents are players with fewer than three accrued seasons. They don’t have negotiating power and must stay with a team if they’re tendered.

So Robertson will return to the Browns for the 2014 season after serving as a full-time starter last year. According to the collective bargaining agreement, his salary for the upcoming season will be $570,000, and he’ll become a restricted free agent next year.

Robertson, 26, started the 14 games in which he appeared last season and missed the other two with a sprained knee. Despite ex-Browns defensive coordinator Ray Horton’s hopes that Robertson would prove to be his “ace in the hole,” he struggled.

ProFootballFocus.com ranked Robertson 52nd out of 55 inside linebackers last season. The website’s ratings placed him 48th against the run and a league-worst 52nd in coverage.