ASM isn't as good as he thinks he is, but he is better than his current performances suggest. I don't doubt that with better players he'd be better - but that's applicable to everyone. Those comments are pure knobheaddery, mind.
Have to say, unlike the previous 14 years, I wouldn't be too upset about any player leaving at any time - namely because I'd know it was the manager's call, and not just an accounting decision. Ambitious clubs still sell players, even good ones, if they aren't the right fit or a better option is available. Under Ashley, selling ASM would have just been about the bottom line.