He's not old either, pal. But young in football terms is someone like Dusan imho. Someone who can spend 4-5 years at your club, maybe even develop further and can possibly be sold at the same amount or more if he does well.
At 27-28 it's a Higuain type deal risk; player does well for a few years then regresses or at least decreases in value.
Still loved Higuain and I'd love SMS but business wise there are better options out there. But some experience might be appreciated as well by Max ofc.