Take what I'm saying with a grain of salt but I would train him this season in 1v1 forwards and then sell.
The time to train his outside skills was long ago - before his salary got so high. Now that his salary is astronomically high for a D3 team, using him as a PG in order to train outside skills will essentially tank your team for not much in return. How fast do we expect a 7'4'' player at 23/24 to gain OD? It's just not worth it in my opinion and you'd get a much better return and quicker return if you sold now or at the end of the season.