With Dean Whitehead also out of the game on Saturday, this time through suspension, Nyron Nosworthy may be forced out of his new central position with either Stanislav Varga or Kenny Cunningham replacing him.
Keane said: "We're hoping Danny's OK, he's got a chance, we'll have a look at him today.
"But you can over-worry about it. You're going to get players injured and suspended and we've got quality players to come in."