I do think they could have waited to get him, that said if they did wait to get him they would have missed on someone else they did choose.....unless he could have been a UDFA.....I see why they took a chance on him with what he did in college, and he did it as a walk on (I think), that to me showed he did have drive.....where that went only he (Bennett) knows.
He may still figure it out, but if I were Sean I wouldn't force the issue.....he finds himself or he doesn't.....that's what will allow him to stick or be gone....If he sticks it may be an all but forgotten find...that's a +++ to me.....if not it means little to nothing.
