Dominic Matteo is back from suspension, Lucas Radebe is slowly recovering from injury while David Batty has shaken off the ankle problem which ruled him out of the trip to Southampton.
Head coach Kevin Blackwell said in the Yorkshire Evening Post: "We had a good session yesterday and with the exception of Mark we're as strong as we can be.
"It's the first time in six or seven weeks we've been at full strength so that's a plus.
"The players came back well yesterday and they worked hard. They looked sharp. They showed a good attitude which was nice to see and we're looking forward to getting a good week's work in now."
Eddie Gray and Blackwell are believed to have been in contact with Viduka, but there are no indications whether or not he will return in time for Saturday's clash with Boro.