"Don't be shocked if he sues," Florio says.
Gordon was suspended last week for one full year for violating the league's substance abuse policy.
According to Florio, if Gordon were to sue, a suit "would include a request to block the suspension pending the outcome of the case."
The NFL and NFLPA have reportedly discussed raising the threshold for a positive marijuana test.
Gordon led the NFL with 1,646 receiving yards last season in only 14 games. He was selected to the Pro Bowl and AP All-Pro first team.
- Dan Gartland