Grimshaw will return after five weeks out with a groin problem, while Langtree has been nursing a shin problem and Thompson a shoulder complaint.
Oldham coach Scott Naylor also confirmed that despite Huddersfield’s Super 8s Qualifiers match at Leigh tomorrow he will again have the dual-reg facility available to him.
“We are a good team at home and we are going into the game with three more league points than them,” Naylor said.
“We’ve had some good performances at Bower Fold and it’s up to us to go out and play like that again.
“A lot has been made of Whitehaven’s 56-12 win at Dewsbury.
“They played well, but I’ve watched the game and Dewsbury were absolutely shocking in the last 25 minutes so I don’t think we should read too much into that result.
“They’ve upped the tempo since they sacked the coach and they strengthened just before the deadline, but in the game before they went to Dewsbury they were beaten comfortably at home by Halifax.
“We’ve got to be positive, play it tough, reproduce the best rugby we’ve played at home this season – and maintain it for 80 minutes.”