When it comes to making money, NFL players (when it comes to MLB and NBA) make the least amount of money guaranteed wise. Endorsements are just another way to make money for athletes to make money off the court.
During the Cowboys win over the Dolphins, Dak Prescott was heard telling his huddle that, "Spicy nuggets are back. I might have to stop on the way home." Prescott is already endorsed by Oikos, Campbell's Chunky Soup, and Pepsi to name a few. There's nothing wrong with him, if he is, trying to add Wendy's to his list of endorsements although he said he doesn't worry about that stuff during the season.
Bianchi called it 'shameful' for Dak to try and grab an endorsement in a huddle and a fun debate ensues between the Open Mike crew. You can listen to it below.