You can tell just by looking at Tyler Bray that he's an ectomorph body type. He has to work his tail off for every pound gained. Tall, skinny, and linear build with smaller shoulders are all signs. I agree with the poster who said he may never weigh 225 pounds. If he does, I doubt it happens while he's here. Probably not until he's older and his metabolism slows. It doesn't mean he can't be a good or even great quarterback. When Johnny Unitas first arrived on the Louisville campus, he stood at a solid 6'1, but a measly 145 pounds. Took him years to get built up, and he still ended up never hitting 200 lbs. I think 195 was his final listed weight.
If Bray keeps working, doing what the coaches say, staying in the weight room, and eating properly, 210 isn't unreasonable by any stretch. Just don't hold your breath waiting for him to show up at 230, because that's probably not gonna happen any time soon.