By Tzvi Machlin Prior to the 2021 NFL season, the Dallas Cowboys signed star quarterback Dak Prescott to a lucrative contract extension. One year later, they appear to be asking Dak to effectively take one for the team. According to ProFootballTalk, the Cowboys are working with Dak on restructuring his contract to offer some cap relief. Dallas are reportedly over $13 million in the red on cap space, per OverTheCap. Dak has a $34.5 million cap number in 2022 and accounts for over 15-percent of the team’s cap room. Adjusting his contract in some way would certainly have the potential to put Dall…