The former Arsenal captain, Vieira, had many an epic midfield battle with Black Cats boss Roy Keane during the Irishman's days at Old Trafford. It would be an understatement to say that Keane and Vieira didn't particularly like each other which makes this link so unbelievable.
I personally believe that Vieira was and still is a quality player and I think he would be a magnificent signing for a club like Sunderland. He is now 32-years old however I feel he could prove to be an excellent acquisition for Sunderland, although I do think Vieira may be reluctant to re-ignite the pair's relationship at the Stadium of Light.