Could be, some people have peaked at that age.At 17 he's still growing. Could be 193 by next Tuesday.
As long as he hasn't also peaked as a footballer I don't think it matters much.
It did occur to me earlier that some sports (and I'm thinking primarily goalkeepers here) must be skewed heavily towards people who have their growth spurt early, because if you're the type who shoots up aged 18 it's probably too late to make it as a professional.