1 position OD training for 1-1.5 seasons will raise both OD and ID to 9-10. Then you can train him JS/JR. Good luck with him
That wont happen, OD trains ID at a very very low pace, I guess this player would need more than one whole season of ID training to reach 10 in this skill and thats pretty much a waste of time.
I'd sell him and get a 100k+ center for the money you can make of this player.