Sunderland are sweating on scan results of a new knee injury for striker Kenwyne Jones.

Jones, who made his first start of the season at Chelsea last weekend after a knee ligament injury, hurt the same knee in training on Friday, and the manager is anxiously awaiting a diagnosis ahead of Wednesday night's Carling Cup clash with Blackburn.

Keane said: "Kenwyne literally slipped with two minutes to go of training and just felt his knee.

"He came to the hotel with us, we took him in the squad, but on Saturday morning we thought we weren't going to take any risks.

"How serious it is, we will probably know in the next 24, 48 hours.

"But he could be okay for this week. We will just keep an open mind on it."