Your Uruguayan Center is 18 year old right now and if he is trained well enough he could potentially make the Uruguay U21 team when he is 21 years old or so.
Your best bet is to BBmail their U21 coach on how best to train that player to make him part of the U21 team. I am sure they have some knowledge of english within their community or if the original person don't then they would forward it to someone that would know english.
You get the glamour of having a U21 player along with extra merchandising revenue if you have a U21 player.