Manchester City forward Sergio Aguero has admitted that he is worried about Manchester United and Chelsea in this year's title race.
The 25-year-old Argentinian has, however, backed new City manager Manuel Pellegrini to bring the Premier League back to the Etihad stadium.
After surrendering the Premier League title to their fierce Manchester rivals last season, the striker feels that United are still the ones to beat in the 2013/14 campaign.
He also believes that with the return of Jose Mourinho to Chelsea, the Blues will also be front runners in the competition.
"Man United will be desperate to retain it under their new manager and their squad is impressive," Aguero told Match of the Day magazine.
The City striker then went on to express his concern at this seasons strong Chelsea side.
He said: "Chelsea will also be dangerous, and you know Jose Mourinho will bring out the best in them. But we have a new manager too and I think the other teams will be looking at us as potential champions this season."
The reign of former City manager Roberto Mancini ended following a series of in-fights, public criticism of players and poor communication with players and executives. Aguero feel that there will be no such problems like that this time around.
The former Atletico Madrid player spoke fondly of the current City manager saying before saying he is more than up for the challenge of being the club's main striker.
He added: "Every manager is different, but the whole squad has really been enjoying his training sessions and he’s made time to speak to every player.
"It’s not just Manuel Pellegrini’s arrival, the new signings have bonded really well.
"I hope to score a lot of goals this season to win back the Premier League. Obviously my job is to score and create goals, but the team result is the most important things so I’m happy as long as we’re winning games."
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