Lillis returned to Spotland from Scunthorpe to resume his loan spell after recovering from a hamstring injury.
As a result, fellow loanee Luke Daniels - who stood in for Lillis - has returned to West Brom and winger Joe Thompson is also fit after a hamstring strain as Hill's men bid to end 2010 on a high.
Hill guided the club to their first promotion since 1969 in May and is determined to keep on pushing forward.
He said: "I think we should be given a little bit more respect from outside for what we've done for this club. We want to continue that development."