If true this particular kid (man) would be out of bounds, however the rule is for a 5th year student senior in high school to be able to play he would need an exemption and that exemption would consist of (the student missing a semester of school his soph. (10 grade year) then those circumstances would be taken under consideration as of the why and so forth.
Final point you must be sure this kid is really out of bounds first, simply because he looks a little older doesn't mean its evidence, I know of a 16 year old kid coming to play in the 16u world showcase games who stands 6'7 325 he looks like a man but here he's only 16 he will be at Cowboys stadium (AT&T) in January 2017.
We have an academy sixman team that plays as a 16u meaning players in 10th grade we play both a JV and Varsity schedule, this could be considered a disadvantage for some programs, but we use this team to develop skill position players for our 11 man academy 18u high school team.
So if you defeat us that's great too because we are playing for development of athletic talent, while enhancing the academic aspect for college if the talent is there for a scholarship possibility senior season.
And if we play you we find no reason to recruit your players, our program is not dependent on your one maybe two good players, our system for building or reloading for the next season requires putting in the work to find talented students some of which are not playing any sport.