Lawrence missed Saturday`s 1-1 draw at Crewe with a groin problem he sustained in the previous game against Rotherham, while Barcham has been out for nearly a month with an ankle injury.
Defender Tony Sinclair is also likely to be in the squad despite picking up an ankle problem in a practice match on Tuesday.
However, centre-backs Josh Gowling (ankle) and Simon King (hamstring) miss out while forward Dennis Oli will be used as an impact substitute again due to a troublesome hamstring.
Midfielders Joe Martin (cheekbone) and Chris Palmer (knee) remain sidelined, as does Connor Essam (ankle).
Source: PA
Source: PA