Lampard is the bigger concern with a calf injury the club had yesterday been confident would not rule him out, while Terry is expected to be available despite picking up a back problem.
Double doubt: Terry (left) and Lamaprd (right) may miss out at the Reebok
Manager Carlo Ancelotti remains without Alex (knee), Yury Zhirkov (calf) and Yossi Benayoun (achilles).
Provisional squad: Cech, Ferreira, Bosingwa, Ivanovic, Bruma, Terry, Cole, Mikel, Ramires, Kalou, Essien, Lampard, Anelka, Sturridge, Drogba, Malouda, Turnbull, Van Aanholt, McEachran, Mellis.
CLICK HERE FOR THE WEEKEND TEAM NEWS IN THE BARCLAYS PREMIER LEAGUE Explore more:People: John Terry, Frank Lampard, Carlo Ancelotti Places: United Kingdom