After four seasons with the Phantoms, it became clear that Matsumoto was never going to break through in the Flyers organization. He's been a 30 goal scorer the last two seasons in the AHL, but the Flyers just don't have room at center. Hell, the Flyers can't even fit their NHL-level centers on the roster, let alone an the guy at six or seven on the depth chart.
Matsumoto will be a free agent this summer anyway. Best of luck to him in Charlotte and Raleigh, or wherever he ends up.