Alan Smith!!!
I kid, I kid.
One possibility, given England's depth at centreback and his versatility may be Ledley King, who I have heard is versatile enough to handle the defensive midfield role. The likelihood of him breaking through Ferdinand-Terry-Campbell* is not great, health and, ahem, eligibility-permitting.
*Personally, I think Terry has earned the starting nod over Campbell based on recent performances. But Eriksson is not fond of change and Campbell will probably get a long look again anyway.