League One - Team news: Wednesday's defensive poser
Jones returned for the midweek FA Cup defeat to Blackpool after missing the previous four games due to an ankle injury while on-loan Llera was ineligible to play against his parent club.
Megson made seven changes for the fourth-round replay on Tuesday night and is expected to revert back to something similar to the side that started in last week's league match against Yeovil.
John Bostock, on loan from Tottenham, is likely to be recalled, as is fellow midfielder David Prutton, while winger Jermaine Johnson, who has scored three goals in his last five games, will return after being rested.
Strikers Gary Madine and Chris O'Grady are also likely to return to the starting XI as the Owls bid to extend their unbeaten away record in the league to four matches.