The Cleveland Browns will have some business to take care of soon, as center Alex Mack is expected to opt out of his contract. Mack signed a 5-year deal back in 2014, and it offered the option to opt out. There had been some chatter he might not opt out, but it is no surprise he will look to boost his salary coming off some strong work.
Ian Rapoport reported the expected opt out, but he is also reporting "a new contract is a real possibility." I'd imagine in most cases a new contract is a "real possibility", but that doesn't really clarify how close the two sides might be on a potential new deal.