Chip Kelly, Sean Payton, Mike Shanahan and Mike Holmgren have been linked to the San Francisco 49ers' head coaching vacancy.

The 49ers fired Jim Tomsula following the final game of the 2015 season.

Payton has privately discussed his interest in the Chargers opening, and in the past, he's let it be known he'd be interested in the 49ers job, as well, according to Ian Rapoport. Payton and Trent Baalke share a connection with Bill Parcells.

Kelly is connected to Tom Gamble, who was fired by the Eagles. Kelly is believed to still be high on Colin Kaepernick.