Here's why Rex Ryan is wearing a Chargers shirt at the Daytona 500

For the first time since 1998, Rex Ryan is without a job in the NFL. Every head coaching vacancy has been filled for weeks, there are no openings for defensive coordinators, and it appears likely that he'll spend the 2017 season watching from the sidelines rather than coaching from one.

As a result, he's spending his first free offseason by making the rounds in other sports. After visiting the Yankees' spring training facility, Ryan showed up at Sunday's Daytona 500. His attire was, well, interesting.

Start the rumors: here's Rex Ryan at Daytona wearing a Chargers-logo golf shirt.

— Jay Busbee (@jaybusbee) February 26, 2017

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Why exactly would Ryan be wearing a Chargers polo? One theory would suggest it's a sign of things to come with him possibly joining their coaching staff. Only, their staff has supposedly been finalized, throwing a wrench in that speculation.

The more likely theory is that new Chargers head coach and former Bills offensive coordinator, Anthony Lynn, gave Ryan the shirt to wear. That's what ESPN's Mike Rodak is reporting.

Why is Rex Ryan wearing a Chargers shirt at Daytona? I'm told Anthony Lynn sent it along. Free of charge for his former boss to wear around.

— Mike Rodak (@mikerodak) February 26, 2017

Rex Ryan would NOT make a good pit crew member: #PettyMotorsports #Daytona500

— Courtney Fallon (@CourtneyFallon_) February 26, 2017

Ryan seems to be enjoying his offseason, which is likely to be his first without the NFL.