They were included in Jones’ pre-tournament squad and return to the fold as the competition takes a break ahead of round three later this month.
England will train against Georgia on Tuesday and Wednesday as part of their build up to the Calcutta Cup clash with Scotland on February 24.
Haskell and Marler will be eligible to play at Murrayfield and will hope to force their way back in despite impressive performances from England so far.
Nathan Hughes and Denny Solomona are also in the extended squad, but Alex Hepburn, George Kruis and Sam Simmonds do not feature despite being in the 23 that beat Wales – the latter starting at number eight.
“We want to have the best scrum in the world."
England forwards to take on Georgian counterparts in training this week.
— England Rugby (@EnglandRugby) February 11, 2018
Forwards: Dan Cole, Luke Cowan-Dickie, Charlie Ewels, Jamie George, Dylan Hartley, James Haskell, Nathan Hughes, Nick Isiekwe, Maro Itoje, Courtney Lawes, Joe Launchbury, Joe Marler, Zach Mercer, Sam Moore, Chris Robshaw, Sam Underhill, Mako Vunipola, Harry Williams.
Backs: Mike Brown, Danny Care, Owen Farrell, George Ford, Gabriel Ibitoye, Jonathan Joseph, Harry Mallinder, Jonny May, Jack Nowell, Denny Solomona, Marcus Smith, Ben Te’o, Anthony Watson, Richard Wigglesworth.
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