The Eagles GM spoke prior to the team’s departure for Super Bowl LVII Howie Roseman wasn’t ready to talk about free agents or off-season strategy. The Eagles GM is practicing what coaches and players have said all year – be where your feet are, don’t look ahead to the possibility of a contract extension, or, in the case of coordinators Jonathan Gannon and Shane Steichen, a head coaching job. So, Roseman’s head isn’t ready to wrap around the more than a dozen players who will become free agents when Sunday ends. His feet are deeply immersed in Super Bowl LVII…