Nothing has changed. He's a decent keeper, at the level of Ben Foster a couple of years ago or Tim Howard for a few years at Everton. All keepers make mistakes. He has flaws in his game but he's ok. That goal yesterday would not have been saved by any goalie, and those who think it would have obviously never played in goal.
If somebody lost their mind and offered £70 million for him, should we take it? I would say yes. But the chances of that are slim, and we have bigger problems than a goalie who never comes off his line, and makes 2 or 3 mistakes a season.