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The Chargers have talked about the possibility of adding a quarterback in the draft and they’re doing their due diligence on this year’s prospects.

They had workouts with Texas Tech’s Patrick Mahomes and Tennessee’s Joshua Dobbs and are set to work out Notre Dame’s DeShone Kizer on Friday. If they do draft a quarterback, they’ll be playing behind Philip Rivers and Rivers said during an interview with Nick Hardwick and Judson Richards on KLSD that he’d be willing to act as a mentor. He also said that the learning process would be an extended one for any new arrival.

“You expect at some point they’re going to get a younger guy in the room to try to start to develop him and groom him,” Rivers said. “It doesn’t by any means really affect me. I think it’s healthy for me to know this thing doesn’t last forever. I have to get to playing better and keep this thing going as long as you can. I think as long as I do that, then whoever it is they bring in here, they’re going to sit for a while.”

Rivers is signed through 2019, so any rookie addition would be sitting for at least three years if he plays out his current pact with the team that didn’t let Drew Brees’ presence stop them from adding a quarterback in the first round of the 2004 draft.