People have scoffed at Roy saying he is at his level managing underachieving teams with average players. Doesn't that sound a lot like England?
Yes, but he only ever guides those teams to mediocrity, he might make them perform better than you'd expect, but they never look like world beaters.
I think the biggest problems Roy will face will be very similar to the ones he had at Liverpool. Most of the players at his disposal are used to playing with dynamic, tactically astute managers. Or Alex Ferguson. Roy's single-minded tactical simplicity is not what they are used to.
One of the big issues I had with him at Liverpool was the way he wanted the back line to play. Keep it straight and hoof it up long when you get possession. It made no use of some of the best assets of the players in those positions. Glen Johnson playing as an old-fashioned full back being asked to stick to a flat line with the centre backs is a bizarre and wasteful misuse of resources. Daniel Agger being told to hoof it up rather than play the ball out of defence, it's like using an F1 ferarri to pop down the shops.
Looking at the defenders available for England, the likely starters at full back are all closer to the Johnson role than the flat line Hodgson prefers. Ashley Cole will not thrive if he cannot cross the halfway line, any more than Glen could last season. Walker, Richards, even Baines, none of them are used to playing like that. Whatever he decides to do with the Terry/Ferdinand situation, it's hard to see him going for two non-ball playing defenders in the middle.
England's big problem often seems to be the egos of the players, people who do it week-in, week-out for their clubs seem ineffective for England, there's no obvious leaders because everyone thinks it should be them. I don't see Roy having the authority to change that culture, he wont command the respect that Copello or even Sven counted on. (This looks like the reason he's brought in Gary Neville, although he seems to have forgotten what a gobby and divisive presence rat boy brought to the squad in the past...)