Luiz has not trained since Tuesday's win over Manchester United after straining a hamstring, while Mikel hurt his knee during the warm-up for that game.
Impressive start: David Luiz (left) has settled well in the Chelsea defence
Alex (knee) and Yossi Benayoun (achilles) are both closing in on their returns from long-term injuries.
Provisional squad: Cech, Bosingwa, Ferreira, Terry, Luiz, Ivanovic, Zhirkov, Cole, Obi, Essien, Lampard, Ramires, McEachran, Kalou, Malouda, Anelka, Torres, Drogba, Turnbull.
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