The last thing I want is for this club to be like Milan of 2 years ago.
An old squad, so old that in order for them to tread water they needed to sell their two biggest assets, blow everything up, and start a bunch of younger players right away.
Stuff like this needs to be gradual, and sometimes a little moreso than that. These moves are a step in that direction. Have your seasoned veterans there while they still have something to give, and introduce younger players in to the rotation so that when they are ready to take over, the shock isn't nearly as traumatic.
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How do you know Iturbe is never going to be world class? He's 21.
Was Sanchez "World Class" when he was 21? No, he wasn't. He was a promising young player.