I've no idea what he would say.
But for me, when you're building a footballing side in the PL it's quite easy to get the balance wrong. Put in too many footballers who won't go to physical sides and fight for the ball and you struggle. I'd say most good teams have space for 3-4 defensive liabilities, I wouldn't want to use that on a player like Alonso personally.
However in Spain you don't need the same physical presence. You might have space for 5-6 defensive liabilities, in which case I would take Alonso and his fantastic ability on the ball.