Our new Irish striker started on the bench as the boss opted to stick with Teddy Sheringham and Les Ferdinand up front.
Glenn explained: "He was warmed up and ready to come on just before Chris Perry got drastically injured. Obviously he couldn't go on at right-back so Gary Doherty went on.
"It was still in my mind to bring him on then Matthew Etherington held his hand up and said his knee had gone, so it was forced upon us to make a change.
"I didn't want to put him on the right side of midfield, Steffen Iversen has done that for his country, so that was the reason Robbie wasn't used.
"He was warmed up and ready to come on but we needed a rethink."
Glenn Hoddle revealed that he was ready to hand Robbie Keane his debut against Fulham before he was forced to alter his plans due to Chris Perry's injury.