A howler is still a howler if you get away with it. He makes LOADS of mistakes, but if they don't result in goals people don't seem to count them. Honestly, the amount of times balls go in behind him and he doesn't even seem to notice the player running onto it is staggering. Anytime anyone runs at him he looks like his feet are in concrete, and they just glide by him like he's not there.
Mina has played a couple of games, in a new country, in a couple of different systems, with different partners. Keane has been at best average for 18 months. I have no idea why we would prefer to stick with someone who we know isn't very good rather than giving the benefit of the doubt to someone who could be much better. Obviously i'm talking about us as fans here, if Silva thinks Keane is the better bet having watched them all train etc than I defer to him, but I struggle to see how anyone could actually want to see Keane as a mainstay of the team after the last season and a half.