Jones, a club-record signing from Hibernian this summer, missed the Iron's last two games after being concussed in the 4-0 thrashing at Sheffield Wednesday but the centre-half is available to face the Eagles.
Teenage central defender Canavan missed the defeat against QPR two weeks ago due to an ankle injury, but he is also back in contention.
Canavan came through 90 minutes of a reserve team game against Middlesbrough on Tuesday night and could start after an impressive display in the Carling Cup win at Swansea.
Josh Wright and Grant McCann are pushing for starting berths after being on the bench against the R's
Andrew Wright (broken metatarsal) will definitely not feature, and fellow defender Kenny Milne is still not ready to return as he continues to work his way back from a knee injury that has kept him out for 13 months.