England [ Images ] left back Ashley Cole [ Images ] will miss holders Chelsea's [ Images ] Champions League [ Images ] Group E game at home to Shakhtar Donetsk on Wednesday because of a hamstring injury.
Cole will be replaced by his young understudy Ryan Bertrand who played on the left side of midfield in the penalty shootout win over Bayern Munich [ Images ] in last season's final.
"Ashley Cole won't be available tomorrow, he has a problem with his hamstring, shouldn't be out for long," coach Roberto Di Matteo told reporters on Tuesday.
"Ryan Bertrand has always performed well for us when he's played and I have full confidence he will play a great game."
Photograph: Suzanne Plunkett/Reuters