Johnno has been out of action since September after undergoing a double hernia operation while club captain Vickers hasn't played since breaking a rib in the local derby against West Brom six weeks ago.
"They'll get another game in this week and hopefully get a couple of weeks training in on top of that and be ready for the Christmas period," said Blues boss Steve Bruce.
"That would be a big boost because you need all the bodies you possibly can for such a hectic period of matches."
The Blues second string haven't played a Barclaycard Premier Reserve League fixture since their 2-0 victory over Liverpool at St. Andrew's on November 18th, as games against Bradford City and Sunderland were both postponed.
Blues: Bennett, Hutchinson, Gilbert, Capaldi, Woodhouse, Vickers, Johnson M, Luntala, Grondin, Fagan, Kirovski. Subs from: Davies, Alsop, Barrowman, Hipkiss, Allen.
Blackburn: Robinson, Douglas, Bjornebye, Danns, Greer, Todd, Gillespie, Grabbi, Jansen, Mahon, Morgan. Subs from: Pelzer, Drench, Hockenhull, Donnelly, Watt.
Kick-off at Morecambe is 7pm.
Reserves Results
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