The Dallas Cowboys appear to be staying with their current quarterback Dak Prescott despite their need to find a replacement for him.
According to Jeremy Fowler of ESPN, the Cowboys do not intend to seek a trade for a quarterback unless there is a "unforeseen shift." Prescott underwent surgery on his damaged thumb yesterday
and depending on whatever timetable you believe, he may return in the next four weeks or may be out for six to eight.
Dallas will start Cooper Rush and back him up with Will Grier by employing their own internal choices. There isn't really much potential with either player.
Regarding another quarterback, the Cowboys currently have no worthwhile options, according to RJ Ochoa of Blogging the Boys, who responded to Fowler's story.
They approached it as they always have, and now they must rely on Cooper Rush, which is why you should take this position (and others) seriously in the actual offseason.