be careful as his value isnt likely to improve much if you just stick to the same training routine... to make him an attractive purchase he needs either PA or more JS or even OD.. his height might not be great for OD but you could definitely add value to him by adding Passing.... at age 21/22 those pops are much tougher to achieve... he is great for his age and you'll have plenty of time to round up his stats to wondrous so you might want to think about a season of passing up to strong/proficient to really make him a valuable asset to keep or sell... otherwise he'll just become another run of the mill center with low resale.