I agree with all that. He is likely to lose a bunch of his best players. Losing Lukaku, assuming he does, is going to be a huge blow. Even should he rebuild with equally good players, is he going to do better than this season? CL? Unlikley with the resources available. Mind you, he could stay doing that for two more seasons and maybe land an even bigger job than Spurs.Benitez has backing at Napoli, and is in the Champion's League next year – hard to see him opting for Europa instead.
Martinez has only been at Everton a year, and while it's plainly ridiculous for me to cast judgement on his character from what I see in the press, he does seem a loyal type, not one to fuck off at the first sign of a better deal. That said, if Lukaku goes, if Delafeu goes, his chairman won't pay up for Barry or to replace the above, then he may be tempted. Without his loan signings he'd have struggled to perform this season as well as he has.
The thing that worries me about Pochettino is that he inherited a good squad of players, who were used to playing together in a fairly decent way, at a club that is now very well run. He didnt join a club in disaray - most people were very surprised that Nigel Adkins got the boot. The fact that two of his best players are in the England squad and likely to sell for a lot of money to bigger clubs this summer reinforces the view that he arrived at a great time, inheriting a team about to peak. He could be great. But it's the biggest risk out of all these options, in my opinion.Pochettino seems the most likely. Especially if the club sell his two best players which looks likely. I was sceptical of his win-rate, but Lister made some good points here: http://www.thefightingcock.co.uk/forum/threads/pochettino-yes-please.8930/page-12