Jake Haener
I think Haener's release point will be his biggest obstacle. His throws are compact and quick, but he'll need to adjust and release the ball higher at times (we'll definitely see PBUs). He seemed to have good pocket awareness and navigated through defenders well. If he can master finding those passing lanes like Brees, his height shouldn't be an issue.
He definitely doesn't look like Book, Stevens, Grayson, Canfield, etc. I think there might be something to actually work with here for once.