Manchester City v Arsenal: Roberto Mancini hopeful Argentine duo Sergio Agüero and Carlos Tévez can shine "I am upset we lost Agüero for four games at the start of the season and it was important to have Agüero," Mancini said. He's a top striker, he's quick, he's strong in the box and instead we lost him for four games and I was upset for this. They can play together because they are Argentinian but we have four strikers that can play together. Sergio is young, he's 24 but scores a lot of goals every year. In England it's more difficult to score in your first year but he did very well last year and I hope he can improve this year. The title win was followed by the quietest summer since the Abu Dhabi United Group takeover in 2008 and despite continued sniping from the Arsenal manager Arsene Wenger about "financial doping," Mancini believes he will have to carry on spending to maintain City's new status. He added: "If we want to stay at the top with all of the other teams that have spent a lot of money in the last 10 years I think that we need to improve sometimes and buy top players and this is the market. Every time, all the managers, someone, is talking about the money every time. We have 11 players like all the other teams.