Sunderland are yet to make real waves in the market this summer after an expensive window followed their promotion to the Premier League. Several first-team players have departed, while veteran defender Thomas Meunier has arrived as their sole senior signing so far. Regis Le Bris is set to address his lack of midfield depth this summer, even after Granit Xhaka decided to stay on Wearside amid real interest from Chelsea. The 30-year-old is valued at around £12.8m, with Sunderland eyeing another Xhaka-esque move for an ageing ex-Premier League star. Andre-Frank Zambo Anguissa was a standout in the Premier League at Fulham, with 87.3 per cent pass accuracy, 2.49 successful dribbles per 90 and 7.64 duels won per 90. His defensive qualities were also worth praise, as he made 2.84 tackles per 90, 2.01 interceptions per 90 and 7.05 recoveries per 90. The Cameroonian international has since gone on to be a two-time Serie A winner at Napoli and played regularly in the Champions League, so would clearly be a shrewd signing for the Black Cats this summer. Napoli director Giovanni Manna recently said: "Frank Anguissa has a contract with Napoli, so I see no need to negotiate with him. He is not for sale.” It is unclear whether he will stick to his word, though, especially if the 30-year-old pushes to leave with less than a year left on his current deal. With Sunderland currently 31 points behind leaders Arsenal in the title race, a move for Anguissa could be just the boost they need to close the gap. The Black Cats are currently 7th in the Premier League, with 54 points from 38 games, and are on a 4-game winning run, with 4 wins and 1 draw in their last 5 games. Their next fixture is away to Ipswich on August 22nd.