manchester united 4-2 manchester city : click here to read the match report .
manuel pellegrini has orchestrated a limp premier league title defence .
city did n't go for diego costa , cesc fabregas or angel di maria .
the are stuck with the likes of jesus navas at the etihad stadium .
the defending champions must bring in big names to grow as a club .
adrian durham : louis van gaal should win manager of the year .