North-East based paper the 'Chronicle Live' are reporting that Wacka, who made well over five-hundred appearances in a Saddlers shirt, has become the latest to join the Black Cats as manager Jack Ross continues to reshape his backroom team.
45-year-old Walker, who along with his storied history with the Saddlers played for the likes of Tottenham Hotspur and West Ham United in a career which spanned over two decades, had spent the last few seasons working for Lincoln City, forming part of their promotion-winning team.