Cleveland Browns center Alex Mack is likely to opt out of his current contract by March 4, reports Ian Rapoport of NFL.com.
Mack signed a five-year deal worth $42 million prior to the 2014 season. The deal includes a player option worth $8 million for the 2016 season.
At the time he signed the contract, Mack was the highest paid center in the NFL. The three-time Pro Bowler is now the fifth-highest paid center in the league.
While the move will make Mack an unrestricted free agent for the first time, Rapoport reports that it is a strong possibility he will resign with the Browns on a new, more lucrative contract.
Mack has started in 92 games since being taken No. 21 in the 2009 NFL draft out of Cal.