To be fair to Cook, he has always struggled against quality pace in England. 2009 was disappointing for Cook as well. However, unless Clark makes and unlikely return from retirement, I think your bowlers lack the discipline to bowl full enough for the required time to get Cook out cheaply once he's in. The bouncy wickets make their job twice as hard as the slow wickets in August.
I don't think he'll average 27 again but improved strategy should stop the double tons and the 766 run massacre of 10/11.