3. Roberto Martinez
For the longest time, Everton were the model of stability. Led by David Moyes, the Merseyside club operated on a shoe-string but still achieved results. The Scot turned coal into caviar, squeezing every last drop out of his players and budgets to keep the club punching above its weight. But now hes gone, and Roberto Martinez will be expected to carry on his legacy. The problem for the Spaniard is that nobody quite knows how good a manager he is. Protected by the mediocrity of Wigan Athletic, he could excuse his sides poor performances. But with a side accustomed to winning, punctuating 9-0 drubbings with the occasional sparkling performance simply wont be enough. The fact is Martinez has to prove himself as something more than a lower-half manager, and when youve been out-performed as a Wigan boss by Paul Jewell and Steve Bruce, alarm bells might be ringing. Evertonians arent the most expectant fans in the Premier League, and theyre aware there might be a period of transition. But if their status as the longest-serving top-division stalwarts is under threat, even they might call for the Spaniards sacking. He needs to turn his mercurial streak into something more permanent, and quickly.