CARLOS Edwards will miss just his second game for Millwall since he returned from a long-term injury as he is suspended for the Lions' clash with Sheffield United this Saturday.
Shaun Williams is also a doubt after he went off in the 50th minute of the 1-1 draw at Bloomfield Road suffering from back spasms.
That leaves Neil Harris worryingly short of midfield experience. The four that finished the contest at Blackpool had an average age of 21.5.
Jamaica international Shaun Cummings should come in at right-back, while Ben Thompson could partner George Saville in midfield if Williams, who will be given every chance to proves his fitness, misses out.
Fred Onyedinma, who came on for Lee Gregory against the Seasiders, is also in contention to start for the first time in four games. That would likely mean Steve Morison and Aiden O'Brien resuming their partnership up front.
Sheffield United have injury concerns of their own and will be without David Edgar, Jay McEveley, Craig Alcock, John Brayford, James Wallace and Florent Cuvelier.
Bob Harris and Ryan Flynn are closer to returns for the Blades, who moved up to fifth in League One, six points ahead of Millwall, after their 3-0 win over Fleetwood last weekend.
Millwall last met Saturday's opponents in February 2011 in the Championship. Daniel Bogdanovic put United ahead before Kevin Lisbie's last-minute equaliser left the Lions ninth in the table, six points off the top six.
Form guide (Last five league):
Sheffield United: DLWDW
Sky Bet match odds:
Sheffield United 19/20 Draw 5/2 Millwall 14/5
Probable Millwall team:
Archer; Cummings, Craig, Beevers, J Martin; Onyedinma, Thompson, Saville, Ferguson; Morison, O'Brien.