Mate, Weigl is a once-in-a-generation player. You can't rely too much on youngsters who haven't even kicked the ball on a serious level. Even La Masia has a dearth of talent nowadays after the so called 'golden generation'. Almost all their 'future stars' had been sold, and their former most promising player, who was touted to become a worldbeater from 14 y.o., now crosses the ball to Romelu Lukaku on a weekly basis. Superclubs need to buy readymade superstar players like Weigl.
IMO, he's worth more than Pogba (for our system), and no one knows his ceiling. Basically he's a younger and slightly raw copy of Busquets.
Would be an immense signing, Pep is in awe of him. Hope that Pep&Tuchel's good relationship will help to get him next summer or in 2018.