Hill's touchdown and the ensuing extra point tied the score at 40, but the Patriots marched down to kick the game-winning field goal with three seconds left.
On Monday, however, Hill's agent, Drew Rosenhaus, said he was talking to the NFL and NFLPA about their legal options.
After the game, Hill commented on the fan's behavior.
A spokesperson for the Foxborough Police Department said the Chiefs did not show interest in criminal prosecution of the fan, but stadium security and the police decided to pursue it.
The incident occurred after Hill's 75-yard catch-and-run touchdown late in the fourth quarter of Sunday night's game. Hill's momentum carried him through the end zone to the barrier where fans can stand while watching the game. While some fans flipped off the receiver, another doused him with beer.
After contacting the man, police interviewed him Monday.