A shoulder problem is likely to keep new £7 million goalkeeper Craig Gordon from making his Sunderland debut this weekend against Tottenham.
Boss Roy Keane said: "We hope Carlos will be all right. He joined in training yesterday and we'll gauge it over the next one or two days.
"Greg has a slight hamstring strain, so it will be touch and go for him.
"But overall the injury problems are not too bad. I look at the situation at other clubs and I think we've been very lucky."