Hornets boss Walter Mazzarri, meanwhile, had decided to make wholesale changes to his side, with seven players who started in the 2-2 draw at Bournemouth not included from the off today.
Adrian Mariappa makes his first start since rejoining the club from Crystal Palace in the summer transfer window, while Ben Watson is included from the start since the EFL Cup tie with Gillingham in August.
Millwall: Archer, Cummings, Webster, Craig, Cooper, Thompson, Williams, Onyedinma, Morison, Gregory, O'Brien
Subs: King, Romeo, Ferguson, Martin, Abdou, Worrall, Wallace
Watford: Pantilimon, Mariappa, Kaboul, Britos, Djedje, Doucoure, Watson, Guedioura, Mason, Okaka, Sinclair
Subs: Gomes, Prodl, Cleverley, Deeney, Cathcart, Janmaat, Capoue
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