Donnie Alexander and DJ Chark? Can someone tell me more about these two?

Alexander is a undersized LBer he will more than likely play outside maybe Sam. Has very good coverage skills and can deliver a pretty good hit for his size. Some say could be a safety if he can't beef up LINK .Chark is to me a poor man's Beckham he a quick athlete it was said that he was going to be a wr but he has been shown wearing 21 on his ova. But he is more than capable of playing cbLINK