The Panthers didn't go outside, but they did make a roster move.
They released WR Sean Bailey, and picked up WR Samie Parker. The fifth-year wideout was just cut by Denver after spending four years in Kansas City. On a team that needs speed and return ability, he's got a chance to stick here.
Instead of practicing, the Panthers did a glorified walk-through on the stadium concourse. There wasn't much room to do much, which probably bothered the coaches more than the players.