DENVER, CO - AUGUST 29: Jarryd Hayne #38 of the San Francisco 49ers looks on from the bench against the Denver Broncos during preseason action at Sports Authority Field at Mile High on August 29, 2015 in Denver, Colorado. The Broncos defeated the 49ers 19-12. (Photo by Doug Pensinger/Getty Images)

A little over a week ago Jarryd Hayne spoke about the "cut-throat" nature of the NFL, a multi-billion dollar sports league where the rewards are immense and the falls steep.

The former Parramatta Eels fullback was fired by the San Francisco 49ers on Saturday after six regular-season games.

It came as a shock to fans and media, although, taking into account the sad state of the two-win five-loss 49ers and the injury to their star running back Carlos Hyde, it was an understandable move.

It appears Hayne won't be out of an NFL job.

He could be back at the 49ers by Tuesday, but the chances are he'll be on a plane on Monday to one of the other 31 NFL teams, quite possibly the Detroit Lions.