Find out the latest from both campsNeil Harris will be forced to shuffle his pack for Saturday's League One clash with Rochdale at The Den (3pm).
First choice left-back Joe Martin will watch the encounter from the stands, after picking up his fifth yellow card of the season during the 3-1 defeat to Southend United last Saturday.
Martin's suspension may pave the way for Shane Ferguson, who has played in the position at international level for Northern Ireland and on occasion for Millwall, to fill the void.
However, Lions starlet Noah Chesmain is another option, as is skipper Tony Craig, who has vast experience playing at left-back. Chesmain has been biding his time since making his first senior side start last month, impressing in the 2-0 victory over West Brom in the Checkatrade Trophy.
Should Craig get the nod and switch from centre-half to left-back, Sid Nelson could come into manager Neil Harris' plans in the heart of back four.
Millwall's defensive pack will be on alert against a Rochdale outfit who are not afraid to experiment. In a move that proved as risky as it was rewarding, Keith Hill shifted forwards Peter Vincenti and Joe Bunney to full-back last weekend. The bold move resulted in The Dale's first three points of the season, beating Fleetwood Town 2-1.