I’m no Manziel fan by any strech but I’m thinking if he were of a different race these concerns would not be such an issue.
Undersized to be a pro quarterback nowadays.
He’s got basically the same issues list as RGIII (run first QB lacking the size to make that style “safe”, not terribly accurate in the pocket, and an attitude that looks like it will make him very frustrating to coach). Mike Shanahan can attest race didn’t make them not issues.