I agree to a certain extent, but there are expectations in this league, in this club, in our culture that foreign coaches may not be used to, understand or struggle with - particularly if they don't speak English. The culture of the game in England is different which is why I think the personality is so important for. Getting the fans onside with the managers vision is really important. The long term vision also must include developing younger players. This is the best way to progress up the league and provides a sound, sustainable, financial plan for the future (even if you sell them). Foreign coaches may not want that kind of long-term plan, may prefer seasoned players that speak their language etc, so their are issues to consider when appointing foreign coaches that have done elsewhere.
I know many reds for example that were really unhappy when Benitez went there are started buying lots of Spanish players, but he would probably have argued that he didn't know the English market well enough to risk buying English players. Just as Mourinho and Guardiola do not like playing young players (they don't need to risk that when they can buy whoever they want), they always prefer seasoned pros over young players.
