NEIL Harris admits fresh legs are a consideration for tonight's crunch-clash with Wigan – but won't make changes to his team "for the sake of it".
The Lions boss will decide this morning whether any alterations to his starting line-up or tactics are required ahead of the Latics' visit to The Den.
Harris' players put everything into a draining contest with Watford at the weekend so he admits there are "opportunities" for him to shuffle his pack.
That could also include a slight adjustment to Millwall's formation for a fixture that has become even more critical in light of a potential points deduction for Rotherham.
Harris said: "You have to look at the mental side of things, especially after a defeat, and the group is really strong mentally at the moment.
"We lost on Saturday but it was another positive and encouraging performance.
"We were beaten by two quality goals but the performance was really good, so there are no negative thoughts and the group is ready to go again if need be.
"If we want to change it, there are opportunities to do so.
"Yes, it's only our second game in a short space of time but we have five games in 14 days, so squad rotation is definitely a factor.
"But I don't want to make changes for the sake of it – the structure of the team has to be right and the organisation needs to be spot-on."
Harris is sweating on the fitness of centre back Jos Hooiveld and also hopes to have Paris Cowan-Hall available again.
"Paris is really touch-and-go as to whether he's fit enough to be involved," said the interim manager.
"With Magaye Gueye having an impact of late and Lee Martin having an impact on Saturday, we don't have to rush Paris back sooner than we have to.
"Three players have had medium-term injuries – Lee, Paris and Nicky Bailey – so, even though we're in a vital part of the season, we've got to be conscious of their well-being.
"But the three of them will be in our thoughts again.
"Jos will also be touch-and-go. We need to see today who's fit in terms of picking the team, the bench and the shape that we play as well."