The forward was ruled out of Manchester United's Champions League draw in Ukraine with a shin injury, but his manager believes he will be ready to face the Black Cats.
Rooney suffered a shin injury after clashing with teammate Danny Welbeck in training and was unable to feature in the 1-1 draw at the DonBass Arena; however, Moyes insists the England striker will be back in time for Saturday’s clash at the Stadium of Light.
"My plan wasn’t to use Wayne Rooney," Moyes told reporters. "He picked up a crack on the shin and its swollen up. He was going to be on the bench, but he has not been able to make it. I think he will be OK for Saturday. We could have risked him, but we decided not to."
United’s 1-1 draw means it remains unbeaten in Group A after two games, yet Moyes suggests an air of disappointment lingers within the dressing room after the Red Devils went ahead in the first half and looked close to holding on for victory.
"We had to be harder to play against than we have in recent games and we were," Moyes said. "I’m beginning to understand the players a bit better. They were aware of how tough a game it was going to be, and I thought we defended very well.
"There’s a bit of disappointment that we didn’t see the game out, but I felt Shakhtar deserved something from the game."