And Messi was worth 80m + at 21, not that Barca would have ever sold him. The guy is probably worth 150m now.
If Iturbe improves even a little from last year, which is likely as he is barely 21, his price tag will be 40m + next year. Sanchez was bought by Barca for 38m after a season of 12 goals and 10 assists. At age 22. At 21, he had 5 goals, 4 assists. Iturbe, at 20 had 8 goals and 5 assists. Iturbe and Sanchez are the same height and very similar build, and play very similar games (both aged 21).
Iturbe is great at +- 25m. Wait a year, if he improves, we miss out on a player that could easily turn out as good as Sanchez.