Skipper Hammond has been sidelined since he limped out of the third-round win over Blackpool with a calf problem and fellow midfielder Lallana has missed the last two matches with a knee injury.
The duo are edging closer to fitness and boss Nigel Adkins will make late decisions on them.
Adkins this week signed Dany N'Guessan on loan from Leicester and the winger is eligible to make his debut against the Premier League giants.
Lee Holmes is a long-term absentee as he recovers from ankle surgery and fellow wideman Jason Puncheon appears to have fallen out of favour again.
Source: PA
Source: PA