Di Canio says the experience of the former Manchester United player will be important as his much-changed squad settle.
He said: "Wes was a very good player already, but he didn't have a very good season last year. This year he decided to push harder because he is a really good professional.
"Thanks to him and thanks to my staff he has the chance to come back. He is an important footballer for me and I am very glad to have him back in the squad.
"He still has to improve because it is only the first friendly game, but with his experience he can have a big part in my squad I hope."