the first can grow, age and not great primary skills are balanced by star potential. It is not too bad, so you can make of him a center with good passing and attitude to shoot. To be trained single spot, obviously. His cap is about 40K$ at current salary rates.
the second has more potential and better age, but with that height it is a bit more complex to train him as center. You need much patience with him, if you don't have better trainees.