"He picked up a knock in the reserves in midweek and he will have a scan on Friday afternoon.
"We will have a clearer picture next week. Hopefully it will not be anything too serious."
Meanwhile, skipper Ali Benarbia will be serving his one match ban for the red card he recieved at Arsenal on September 10th leaving Keegan with a midfield selection poser for the game with 2nd in the table Liverpool.