Darius Henderson and Liam Trotter are set for their first pre-season run outs at the Broadfield Stadium on Saturday after missing the Irish tour as they recovered from minor injuries.
However, Paul Robinson and Tam Mkandawire will need a little longer before they are ready for action, while Shane Lowry (groin) and James Henry (knee) could also sit out the Crawley crash.
Jimmy Abdou, meanwhile, will stay in France over the weekend, having flown out due to family illness, and will return to training at the beginning of next week.
Dany N'Guessan, who also left the Irish tour for similar reasons, is likely to be in the squad for Saturday.
The meeting with Crawley Town will be the first of two clashes between the sides in just over a fortnight, with that Capital One Cup first round encounter looming on 14th August.
Gary Alexander could lead the line for the newly promoted Sussex side and will doubtless be looking to put one over on his former team-mates.
Lions Player subscribers can listen to live 90 minutes commentary from 3pm on Saturday.
Look out for the link in the Live Audio section, or click through to it from the Crawley Town v Millwall Breaking News article which will appear on Saturday morning.
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