Despite Lennon being on antibiotics since Sunday, Redknapp insists he was right to select the winger in his team before he pulled out.
"Aaron hadn't been feeling well during the day. The doctor came to me and said 'look, he is on antibiotics, I think he will be OK'," Redknapp said.
"He's been fantastic for me since I've been at the club and I was desperate for him to play but do I take the chance of sending the kid out when he doesn't feel he's got any strength or energy to go and play in a game like that.
"So I said, 'look I know how much you want to play but you can't take the chance here if you don't feel you can go out and do yourself justice' and that was it."