The midfielder missed two matches with a hamstring injury at the start of the month and, after returning to training before last weekend's trip to Leeds, fell ill and was unable to travel.
But he is expected to be involved for Mick McCarthy's side as 20th play 21st in the npower Championship.
Nigel Reo-Coker returned to the bench on Saturday after recovering from a hamstring injury and is pushing for a first start since the 1-1 draw with Peterborough in November.
But Paul Taylor remains sidelined with his foot injury.
The Tractor Boys are five points above the Robins and are unbeaten in their last four home fixtures.