Some of the NFL’s top running backs have been getting big paydays, and unless Melvin Gordon gets one, he’s going to cause a huge headache for the Chargers.

Gordon’s agent, Fletcher Smith, told ESPN that Gordon won’t report to training camp and will demand a trade if he doesn’t get a new contract. There’s been little progress in contract talks with the Chargers, according to Smith, so he’s going public with Gordon’s stance.

Damarius Bilbo, Gordon’s other agent, told NFL Network there’s a “strong possibility” Gordon could sit out regular-season games without a new deal, but wants to get something done before training camp.

The 26-year-old is set to make $5.6 million this season in the final year of his deal. The Chargers are Super Bowl hopefuls coming off a season in which they went 12-4 and advanced to the Divisional round of the playoffs.

Gordon, the No. 15 overall pick from the 2015 NFL Draft, is a two-time Pro Bowler. He rushed for 885 yards and 10 touchdowns last season while catching 50 passes for 490 yards and four TDs.

After not scoring a touchdown as a rookie in 14 games, Gordon has 28 rushing touchdowns and 10 receiving touchdowns over the past three seasons.

The Jets gave Le’Veon Bell a four-year, $52.5 million contract after Bell sat out all of last season, having not gotten the deal he sought from the Steelers. The Rams’ Todd Gurley has the highest average annual salary among running backs at $14.375 million.