You can add the 3-1 Villa disaster to the Brentford City and Liverpool thrashings and he's had a bit of a mare in all of them. Varane escapes a bit of criticism for these thrashing because he didn't play against Brentford and Villa, and was injured early against City.
I've been hugely impressed with Martinez and was wrong to doubt the signing.
However I can't take the "he's the best centre back in the league" and "he's the best centre back in the world" seriously, he's not shown it over a long enough period and he's been far from flawless.
The likes of Arsenal, City, Newcastle, Brighton are significantly outperforming us defensively in just this league and I'm sure their respective forums are lauding their centre backs and don't give our centre backs a look in when discussing who's the best or been the best, we're just very United-centric. Obviously it's a United forum so it's going to have some United bias but you would think he's the only centre back having a decent season if you read this forum. And that's ignoring what's going on in the other top leagues.