The Millers saw their automatic promotion hopes suffer a damaging blow when losing 3-0 at Cheltenham last weekend and realistically only three points will do on Saturday.
Evans will recall Kari Arnason after he served a two-game ban, with the Iceland international set to come back in midfield, possibly at the expense of Michael O'Connor or David Noble.
There could also be a change in goal with Scott Shearer back fit again after several months out with knee and elbow injuries, with Andy Warrington's place under threat.
Daniel Kearns is another option for the Millers and the loanee could start on the left instead of Ben Pringle.
The Millers have only won one of their last six games and their assault on a top-three spot will realistically be over if they lose to the Grecians, who arrive in South Yorkshire two points better off than their hosts.