Yes. The position that they are listed as is just a suggestion as to what position their skills show they would be best at playing, but with him being 7'1" and a trainee, you would want to make him a Center because he will train much much much much much faster for inside skills. I think you are actually very lucky because now you dont have to work on outside skills hardly any since he was originally a SG and you can just make him a BEAST center with good outside skills to go along with it ;)
Murray/Harris/MPJ/Grant/Jokic - 2020 NBA Champs