Champions League Success or Bust for Manuel Pellegrini at Manchester City?

It may feel ridiculous to call the first of six Champions League group stage matches a "must win," but after the first four Premier League matches of Manuel Pellegrini's Manchester City managerial tenure, that is where we are. This must be some way for Pellegrini to be celebrating such a milestone, conjuring Champions League tactics for his suddenly impotent side with the world watching: City's Champions League disappointments the past two seasons punched Roberto Mancini's ticket out of Manchest...