N'Golo Kante remains keen to stay at Chelsea despite reports in the Spanish media linking him with a transfer to Real Madrid.
Kante has missed 20 of Chelsea's 42 games this season due to a host of injuries to his hamstring, knee and ankle, and concerns over his long-term fitness have seen Mateo Kovacic and Jorginho strike up a good partnership in his absence.
Meanwhile, Billy Gilmour's emergence and Ruben Loftus-Cheek's return from injury add to Lampard's options with Ross Barkley and Mason Mount also in the squad.
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Chelsea are also monitoring Lille's 21-year-old midfielder Boubakary Soumare but he currently ranks lower on the club's priority list than a left-back and another forward.