Browns roster transactions: Dan Gronkowski, Kendrick Adams, Kent Richardson sign contracts

With the Cleveland Browns' season over, the team has made a few roster moves for the future. On Thursday, Cleveland signed defensive lineman Kendrick Adams, tight end Dan Gronkowski and defensive back Kent Richardson to reserve/future contracts, according to the team's official website.

After stints with the Tampa Bay Buccaneers and Detroit Lions, Adams spent the final three weeks of the 2012 season on the Browns' practice squad. A rookie out of LSU, he signed with the Lions as an undrafted free agent after the 2012 NFL Draft.

Gronkowski just completed his fourth season in the NFL after being taken in the seventh round of the 2009 NFL Draft by the Lions. He signed with the Browns on Dec. 20, 2011, and appeared in five games that season, but Gronkowski was released during final roster cuts in 2012 fall camp.

Richardson played at West Virginia from 2006-09, and he most recently was a defensive back with the Arena League's Philadelphia Soul in 2012.