.....but will he start?
Does it matter? Right now he should only be thought about in NL only or 20+ team leagues. Even then he shouldn't be starting. I wouldn't put any stock into his weight gain and I regard him the same way I did last year.
He is a guy that has a ton of speed but can't get on base. Until he can consistently hit above .300 and actually draw some walks, he has little to no value. Whether he starts or not.
But if he doesn't start, he'll never get a chance to even come close to being valuable. Whereas if he does start, he may actually gain some value. Hence the question. It doesn't matter how much he weighs or how many bowls of Fruit Loops he eats if he doesn't start.