Kyle Shanahan admitted in an interview with "The TK Show" that the San Francisco 49ers likely would have called Philip Rivers had the team rallied past the Philadelphia Eagles in this past NFC Championship Game.

The Niners were already on their third quarterback -- Brock Purdy -- leading up to the title game.

After seeing Purdy go down with an elbow injury in the first half, a lot of thoughts started running through Shanahan's mind. 

"I still thought we were going to win the game," Shanahan said. "Whole thing, I'm just thinking is, 'Man, I hope Brock's not as bad as they're saying and what's going to be our Plan B? Are we going to have to get Philip Rivers, someone like that, for the Super Bowl?' Because that's what I'm thinking."