Is my ST a fast trainer?

[Toxcatl]

Also keep in mind that fast trainers aren't guaranteed to be good players on the pitch no matter their skills. They will save you some tokens thou since that guy will stay in your team for 5 seasons or more if you know how to manage him.

This is a good thing to mention.
I think there is another hidden parameter besides Talent that determines players performance. Scouts and Recommended players usually perform significantly better than ordinary market players, and, of course, they are always FTs.