What's your verdict. Should we sign him?
I would say we should give it a try, but it isn't a priority.
But, I would also use the words of the great Erik Spoelstra "
that is the untrained eye that say something like that" because honestly he is a difficult case to evaluate.
While Uruguay generally uses the same playing style every game, they make changes every time, they started with 4231 and switched to 433 or 442 and they do this with different personal. The team remains the same despite such changes, which is a testimony of how mature they are, and more importantly how well-coached they are.
In 4231 Diaz is one of the two DM, in 3 man midfield they aren't playing with single pivot, but all 3 switches all the time.
Other than corners and fouls, Diaz isn't a standout, and neither any of his teammates in midfield. Yet there midfield protect the defense well and help in attack, so it is a strong midfield.
The question is, is it strong because of Diaz? or is he just another guy there?
on one hand, he is the leader of the team who is a consistent there, always. OTOH, as I said, he isn't a standout player. You don't watch the game and ask who is this kid.
I said it before, that I don't see him as a pivot in Barca, although he might be tactically sound enough to make the switch.
8M isn't a low price, but there is a chance that in 3 years we will look back and ask why didn't we buy this player?
Just hope our scouts will make the right decision with him.