This is a great trainee for you!! to start this game ,without a doubt.
U21 like Manon says is very difficult,Spain is a big country,and certaintly they have better draft players this season.But you bought this player for 32 k and that's a very good buy,I think you should train this player,but forget U21:)I would start training this player first on inside skills this season,focus on IS and a bit ID (1 position training).And after that you can start training outside,remember if training 1V1 to select SF/PF position because that will train IS also.He will be a key player for your team,and if you should ever decide to sell this player ,iam sure you will make a huge profit