Is this really a thing some people are worrying about? I missed this past game, but I saw the first two preseason games. I honestly have not noticed any significant difference in his size/weight this preseason.
Let's not forget that at age 21/22 is when most young men fill out their frame and gain mass. From age 19-21 I fought mma in the 170 lb. class, but right around the age of 21 I started filling out, especially in the upperback/chest/shoulder areas, and had to move up to the 185 class. I would imagine if anything he just naturally filled out with age. If his weight was a concern of the team, I'm fairly certain we'd know about it.