4) Manuel Pellegrini, Manchester City
Despite leading the Citizens to the title last time, the Chilean may already be fearing for his job due to massive board expectations. Recent stumbles against QPR and CSKA Moscow have put doubts on his continuing reign. Expect to hear more about this if the Sky Blues are knocked out of the Champions League in the group stages, and remember that Roberto Mancini was fired too, after also picking up the title the previous term.