I've got Ganso and Kovacic.
I HIGHLY recommend Kovacic. I'm not sure how much he'll cost you a season into the game, but at the very start of the game, I got him for 4 mil pounds. TBH he's outperforming Ganso, although ganso cost me 30 mil.
Here's a screenshot of his form:
View attachment 211959
I play him as a MC playmaker. Importantly he has the "comes from deep" PPM, which really helps him start off attacking moves.
From personal experience, Willian is absolute balls in MC. He's best used as AMR which can take full advantage of his incredible pace. And also sell Cleverely. I like the guy in real life but he's underrated in FM2012
nice. do u play him as advanced playmaker or deep lying?