Given admits Villa will miss LA Galaxy's Keane
His cameo role ends later this month - on February 25.
Given said: "In training, in the dressing room and on the pitch, Robbie's such a great character.
"There will be a gap but it's down to others to step up to the plate. We've got good young players coming through such as Gary Gardner and Barry Bannan. I know he's only here for six weeks but they can learn from him."