Considering how criticized Mingolet has been this season I wouldn't say he's overrated, he had a bad spell at the start of the season but he's been great for a while now. He's more underrated with the amount of criticism he received.
EDIT: Actually his contract runs until 2019 so you might get away with that at a push, Juve don't have that kind of money though, or they didn't a couple of seasons ago as they couldn't pay transfer fees upfront.
I think they've been memebrs of the forum(s) for a long time and each of them has displayed a complete lack of understanding about the game of football on numerous occasions during this time, and therefore I see little reason to explain to them why they are wrong, as they simply wouldn't be able to comprehend my words.
Edit: Apart from Durham, but he's like on the radio n that.