The Dallas Cowboys and quarterback Dak Prescott have until July 15 to work out a long-term deal.

Otherwise, Prescott will play 2020 for the Cowboys on a $31.4 million exclusive franchise tag. Negotiations remain stuck over factors including length of contract.

Prescott and his representation aren’t entertaining extensions longer than four seasons. The Cowboys want to lock up their franchise quarterback for at least five. It’s that dispute that didn’t line up with a report that gained traction this week from former NFL quarterback Chris Simms, who now works for NBC Sports.

“From what I know of the situation, and I know from some people who are in the know that he’s been offered five years, $175 million,” Simms said Tuesday on Dallas radio station 105.3 The Fan. “He wants a four-year deal. If they do agree to a five-year deal, they would like a really big number at the end of that fifth year to cover their…