The Cleveland Browns made several moves on Monday to start the legal tampering period of the new year.

The Browns agreed to a deal to re-sign center Ethan Pocic to a three-year, $18 million contract. The Browns initially signed Pocic to a one-year deal to back up new starting center Nick Harris last year, but when Harris suffered a season-ending knee injury in the preseason opener in Jacksonville, Pocic took over and thrived in his opportunity.

Pocic, who turns 28 in August, ranked fifth in the league among centers in pass block win rate (96.2%) and fourth among centers in run block win rate (74.6%) in 13 starts.

The Browns also re-signed linebacker Sione Takitaki to a one-year, $2.5 million contract. Takitaki, 27, is coming off his fourth season in Cleveland and posted a career-best 71 combined tackles in 12 total games played, prior to suffering an injury that ended his season.

The Browns also signed defensive end Ogbonnia Okoronkwo to a three-year, $19 million contract. Okoronkwo, 27, is entering his fifth season in the league and his third team during that span. He was previously with the Houston Texans last year and posted a career-best 44 combined tackles and five sacks, which was second on the team. In four seasons in the NFL, Okoronkwo has a career 78 combined tackles, 9.5 sacks and three forced fumbles in 50 games played and eight starts.