With Richard Sneekes struggling with an Achilles problem, Johnsson will come into central midfield.
Molby will be hoping to have a look at Rob Matthews as well. Matthews hasn't played in two months.
Matt Glennon is expected to be given another chance in goal after making his first start of the year on Tuesday.
Gary Bradshaw will miss out after getting injured again in the Reserves on Wednesday. Matt Wicks also remains on the sidelines with a hamstring strain.
Expected line-up (4-4-2): Glennon; Petty, Whittle, Mohan, Van Blerk; Matthews, Johnsson, Greaves, Holt; Alexander, Dudfield.
Subs: Musselwhite, Edwards, Burton, Peat, Morley, Philpott, Beresford, Williams, Caceres, Rowe.