I like Crowder and think he can help the Cowboys special teams. I think Bill will try to keep him, but if it is close he will be cut. He can't contribute at any regular position. He couldn't find a position to play in college, what makes anyone think he can do it in the pros. Wood Dantzler can't do it and he actually earned a position in college.
College teams have much bigger rosters and can keep a guy around to just play special teams, but NFL teams rarely have that luxury. Teams like the Cowboys who finish 5-11, 5-11, 5-11, 10-6 and 6-10 don't seem to be one of those fortunate teams. And I have this opinion even though I find special teams to be very important to winning.
Copper actually made some plays last year at receiver and special teams. He has that advantage on Crowder. It isn't a big advantage, but it is there. Crowder is a good candidate for the practice squad.