Position is determined by the salary formula -
(160760.16).
Whichever position causes the highest salary is what the player is listed as. So yes, if you train a PF in outside skills, it's likely the PG salary will become larger than the PF salary, and he will then be listed as a PG.
Based on that:
- Since he is a PF, I am assuming I will be supremely underpaying for this guy in the future. Is that correct?
No. But sometimes drafting like this can be beneficial in other ways, for example maybe this PF has great starting levels of IS/ID (which is harder to train on short players).
- Will the listed position reset at some point and increase the salary of this player a lot?
Yep.
- Is there any impact to his training schedule as a guard because he is a listed PF?
No it makes no difference, the main factors will be things like age, height, other skills (for elastic purposes).