Grandison saw red just before half-time in last Saturday`s desperate 5-0 defeat at Torquay and now misses the visit of Gary Waddock`s side, along with the trips to Bradford and Rotherham.
As well as the one enforced change, with David Raven the likely man to step in at the back, it remains to be seen how many fresh faces manager Graham Turner opts to introduce following the poor performance at Plainmoor.
Striker Matt Harrold was a 68th-minute introduction from the bench having overcome his struggles with tonsillitis, but he may well start from the off this time around as fifth meets third in League Two.
Fringe midfielder Steve Leslie is unavailable having joined Hereford on a month`s loan.
Source: PA
Source: PA