The San Diego Chargers have scheduled a private workout with former Oregon quarterback Marcus Mariota, an interesting move regarding the most interesting man in the NFL draft.

With rumors flying about his position in the first round of the April 30 draft, no one knows exactly when Mariota will be taken. It seems unlikely that he’ll be taken first by Tampa Bay, which means that there’s the possibility that teams will jockey for a trade to move up to take him. And a great deal of what happens in the draft depends on when he is taken.

The New York Jets and Tennessee Titans have shown interest in Mariota; the Washington Redskins were unable to work out a visit. The Chargers, who will meet with Mariota next week, have the 17th pick and, last anyone looked, have a successful veteran at quarterback.

But that all changed recently when Philip Rivers told UTSanDiego.com’s Kevin Acee that he won’t sign a new contract before this one expires after the 2015 season. In fact, with the Chargers’ future in San Diego in limbo, he said he might not sign at all and General Manager Tom Telesco refused to rule out a trade. Does that mean that Rivers might end up in Tennessee, traded for the second overall pick (or packaged with the 17th pick)? Rivers, of course, would have to agree to a new contract before a deal could go through and he and his wife, who are both from the South, have to decide where the best landing spot it.

But the Mariota visit with the Chargers makes the scenario more plausible. That’s exactly how SI.com’s mock draft has it playing out.