Off course Pogba is worth the money!
What have MU been crying out for since Keane left? A dominant midfielder.
Who is the best midfielder on the market in 2016? Paul Pogba.
Doesn't take much to put 2 and 2 together here, United needed a (potentially) great midfielder so they signed the very best. The $ value doesn't come in to question. If every club in the world had the money to sign Pogba,. then every club in the world would be in to sign him.
I think Pogba is a younger version of Yaya Toure, who was 4 or 5 years older than Pogba when he signed for City (for around a quarter of the fee). Given how prices have risen a la the Auckland property market, United paid the going rate for a player of his quality.
As I'm Not Your Bro says, he played 120+ times for Juve in 3 years, and is generally considered by pundits and players alike to be "the man" for their Scudetto wins.
Pogba is a dominant central midfielder (as opposed to a DM, like Keane) who United strongly believe will score goals, create goals and stop the opposition from doing their thing.
If it works out, and there is no real reason to think it wont, then he's worth every penny and Fergie should start eating a shark sandwich