Given that Tiff was a first-team regular last season I think this is optimistic. I see your logic but both he and his agent will presumably feel he justifies a first-team wage.
Optimistic, i agree, more hopeful. Not beyond the realms of possibility for him to be included in that bracket, doubt his wages would be that high regardless.
Guess it doesn't really matter what he and his agent think, the only opinion that matters is whether or not McKinnon feels he deserves to be allocated a larger first team wage. If not, and he and his agent feel they deserve better, he'll be off. The club's only obligation with regards to compensation was to match, or better, his existing deal. As the youngsters were offered deals before McKinnon was appointed, i'd be surprised if the club had offered him an upgrade to a larger first team wage at that point. McKinnon may have deemed him worthy and revised it since being appointed but we don't know.