The phrase "final roster" refers to the official list of players or members who have been selected to be part of a team or group. It means that no more changes will be made and these individuals are the chosen ones. Full definition
So McLovin had final say on who was drafted (contracts determined by CBA) and who made final roster. (sbnation.com)
The folks over IGN had the exclusive reveal for the 10th and final roster spot, and Capcom has certainly gone out of their way to make Hakan, well... out there. (playstationlifestyle.net)
He was released on September 3rd in Oakland's final roster cutdown, but was re-signed to their practice squad the next day after clearing waivers. (sbnation.com)