Thiago is a wonderful player, when available and fit. He's not that young anymore, and he shouldn't be our marquee signing in midfield. We've ignored/neglected that area of the pitch far too long (hand me downs, quick fixes and medicore freebies ) that at least two quality signings in that department are required.
Thiago as the main acquisition for midfield = underwhelming.
Thiago as a complement = solid.
The same principle applies to Allan from Napoli.
Have a nice day