Tad Prescott isn’t sure he’ll be rooting for the Cowboys “much longer.”

After Wednesday’s deadline passed without Dallas and Dak Prescott agreeing on a long-term extension, the quarterback’s older brother made his anger and disappointment public.

“There is a reason I was never a @dallascowboys fan growing up or before they drafted @dak after today, who knows how much longer I’ll be cheering for them,” Tad tweeted.

NFL Network reported that Prescott turned down a deal worth at least $33 million per season, with $100 million guaranteed. The 26-year-old instead will play on a franchise tag, which will pay Prescott $31.4 million next season.

Prescott has started every game for the Cowboys since being drafted in the fourth round pick in 2016 — and overtaking Tony Romo for the starting job — and has led the team to a pair of playoff appearances, throwing for a career-high 4,902 yards and 30 touchdowns last season.

Wednesday marked the deadline for teams to sign franchise-tagged players to long-term contract extensions.