Mannone commented on the vast amount of money in the game.
The Black Cats goalkeeper looked at the vast amounts of money spent by the likes of Manchester United and Manchester City and has said that the side needs to try to keep pace with other sides in the league when it comes to strengthening the squad.
Mannone is quoted in the Sunderland Echo, saying: “It looks to me like every team is getting better every season, so you need to keep the pace with them. You need to try to be as good as they are.
“They are definitely getting better because they are bringing big players in from abroad, for example Manchester United signing Pogba, Ibrahimovic, then Man City signing players, the best managers coming in, you are thinking it will be a tough one, but it is a good challenge and very exciting."
Sunderland have recently started to do their business in the transfer market having signed Papy Djilobodji, Paddy McNair and Donald Love as David Moyes appears to have made strengthening the defence a priority going into the new campaign.
The club does operate in a different kind of market compared the top clubs. Sunderland probably have to be smarter when it comes to negotiating transfer fees and wages. While those towards the top of the table have a vast amount of spending power in what is a heavily inflated transfer market, which has partly come about because of the new television deal that has come into force.
The article in the Sunderland Echo mentions Moyes' wish to add an attacking midfielder and a new striker to the side. It has been a busy transfer window and Sunderland seem to be no exception as they look to kick on from last season, but bridging the gap towards those that make fast starts seems to be getting that bit more difficult and could be a long way away.
It is not just those clubs that have such financial muscle now, making things all the more competitive.