Champion Manchester City will come up against a familiar face when it attempts to bounce back from its Champions League disappointment this weekend.
The England winger was deemed surplus to requirements by City boss
The 25-year-old returned to action last week and Black Cats boss
"It's a big game for him. I was asked if he has a point to prove, and I think yes, he would have. We all have points to prove," O'Neill said.
"For him going back there, I think he will relish it. I hope we get him into the game - sometimes it's not his own fault and maybe it's something we can improve on ourselves.
"But I am hoping he does well against his old team, and that he comes up big in the game."
Both City and Sunderland are unbeaten in the English Premier League this season but the champion's form has come under the spotlight as it still awaits a first clean sheet.
Mancini's men were indebted to goalkeeper
Despite City's apparent problems it is still level on points with Manchester rival United, which faces a tough trip to
English Premier League
Michael Laudrup has urged his Swansea side to remain motivated and claim a victory against Fulham which could see it finish best of the rest in the Barclays Premier League.