"He's not trained, but it's not impossible he could come out and train tomorrow morning," said Harry before training this morning (Friday, January 20).
"He’s not fit to train today. He can’t, because of his knee, but he may well come out tomorrow morning, so I wouldn’t write him off.
"This is no different to normal. If he comes out tomorrow morning and says ‘I’m okay’, then he’ll play Sunday, if I pick him. That’s how it works. It's amazing, really. It defies everything."
William Gallas and Sandro have both been jogging outside as they continue their rehabilitation from calf injuries.
"They are not fit yet," reported Harry. "They are running at about 60 per cent, so a little way off yet."
Tom Huddlestone has also moved outside as he recovers from a long-term ankle problem.
"Apart from that, we're okay," added Harry.
The defender has missed our last six matches since picking up a hamstring injury in training over the Christmas period.