Kolo and Yaya Toure sent out a warning to their rivals whilst enjoying Manchester City's open top bus tour yesterday.
The Ivorian pair have had differing seasons at Eastlands, with Kolo Toure serving a lengthy ban and Yaya coming to the fore, culminating in his winner against Stoke in the FA Cup final.
However, both are in agreement that the Citizens will be stronger next season and Roberto Mancini's will be challenging for other trophies come the start of the season.
"We just want to enjoy the time with the fans and next season we can do more," said Kolo during the celebrations.
"I think we have the strength, the manager, the team and the club and we will be fighting to do much better than we did this season."
Younger brother Yaya added: "I think about the club and think this is fantastic because the team are doing well. This year the fans are happy, and it will be a big challenge because now we've just won the cup and we're starting to think about next season.
"Today we have to enjoy it and I think next season will be tough. You have to show everybody and our fans that we want to win more next season."
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