Striker Gray, 35, who teams back up with boss Phil Parkinson - the pair were at Charlton together - spent two years at Valley Parade from 2002-4 and is hoping to go straight into the starting line-up.
Parkinson may want to add some fresh legs to his forward line following his side's midweek Capital One Cup heroics against Aston Villa and James Hanson could be rested.
Winger Kyel Reid is pushing for a recall to the starting line-up following his recent recovery from a long-term groin injury, while Ritchie Jones and Ricky Ravenhill offer Parkinson alternative options in midfield.
Parkinson has no new injury or suspension problems apart from the odd minor knock as Bradford chase their first league win in four matches in a bid to climb back into a play-off place.
