Some are already talking about him not being one of the best five offensive linemen on the team. Connor Williams has been taking some center snaps. If the Cowboys feel like a left guard-center tandem of McGovern-Williams is better than Williams-Biadasz then that's the way they will go.
If Biadasz is everything that we hope he is then he will demonstrate that on the field over the next three weeks. However, lets keep in mind that Biadasz became the starting center last season due to injury. First, Fredericks retired before the season even began and then Looney went down. Biadasz didn't earn the starting job, he was simply the next man up. This preseason he will have a chance to earn a starting job.
I've heard a few good things about Biadasz....from team sources and team run media. However, I don't recall anyone from an outside source single him out for the quality of his play. He is ranked between the 20th and 24th best center in the league right now among those that rank player positions. Of course, with Martin and Collins to his right and Tyron to his left, all healthy now, he's got some great advantages few centers in this league share.
Biadasz absolutely should show marked improvement from last season transitioning from a rookie to a 2nd year player. If he doesn't than that is on him.