"James just got a whack on one calf and then got cramp in the other," said Rovers boss Sean O'Driscoll.
"He's trained and if there's no reaction he should be okay."
O'Driscoll could also have centre-back Jason Shackell available if a scan - the results of which were expected this morning - show no problem with his Achilles tendon.
The Wolves defender was pulled out of Saturday's game after reporting pain in the tendon during the pre-match warm-up.
Physio John Dickens could find no outward signs of any problem.
Looking ahead to tonight's game, O'Driscoll said: "The reports that we've had on Swansea are very similar to the one's we've had for the last two years.
"Personnel has changed and obviously they are going to miss somebody like Jason Scotland who was a very influential player for them.
"But they do things exactly the same - they are a little bit different to every other team in the Championship, which makes them difficult to play against and entertaining to watch.
"They will be missing the two players sent off on Saturday, and we are also missing two players (due to suspension) so I suppose that it is a good time to play each other.
"We always find Swansea difficult to play against, but we know what to expect.
"We know the way they play and I'm sure that's not going to change for one game just because they have one or two problems.
"Their passing game is inbuilt into how they do things and, as I've said before, they do it as well as anybody."
The Swans recorded their first home win of the season when beating high-flying Sheffield United 2-1. at the weekend.
Ferrie Bodde, who was playing his first game for ten months following a knee reconstruction operation, lasted just nine minutes and there are fears that he faces another long lay-off.
"He's trained and if there's no reaction he should be okay."
O'Driscoll could also have centre-back Jason Shackell available if a scan - the results of which were expected this morning - show no problem with his Achilles tendon.
The Wolves defender was pulled out of Saturday's game after reporting pain in the tendon during the pre-match warm-up.
Physio John Dickens could find no outward signs of any problem.
Looking ahead to tonight's game, O'Driscoll said: "The reports that we've had on Swansea are very similar to the one's we've had for the last two years.
"Personnel has changed and obviously they are going to miss somebody like Jason Scotland who was a very influential player for them.
"But they do things exactly the same - they are a little bit different to every other team in the Championship, which makes them difficult to play against and entertaining to watch.
"They will be missing the two players sent off on Saturday, and we are also missing two players (due to suspension) so I suppose that it is a good time to play each other.
"We always find Swansea difficult to play against, but we know what to expect.
"We know the way they play and I'm sure that's not going to change for one game just because they have one or two problems.
"Their passing game is inbuilt into how they do things and, as I've said before, they do it as well as anybody."
The Swans recorded their first home win of the season when beating high-flying Sheffield United 2-1. at the weekend.
Ferrie Bodde, who was playing his first game for ten months following a knee reconstruction operation, lasted just nine minutes and there are fears that he faces another long lay-off.