I could ask you the exact same question as he was infuriatingly inconsistent. And just game-to-game. But during games. He didn't get double digit assists and goals. Only one player did that in Serie A and he's currently down the road at Anfield. He didn't have a bad output by any means last year. But all in all his time at Inter has been really up and down.
He fits perfect for what Mourinho demands in terms of his discipline and the defensive side. But if you think he's that great an increase on what you have the other end then you're more than likely in for a surprise.
And yeah, to answer the initial question, I keep up to date on Serie A and watch quite a bit.