Chelsea defender Branislav Ivanovic has warned Manchester City that they face a tough test when defending their Premier League title in the new season.
City secured their first league crown in 44 years as Sergio Aguero scored a dramatic last minute winner on the final day of last campaign, edging out rivals Manchester United in the process.
Ivanovic helped Chelsea lift the Premier League title in 2010 but they failed to retain the silverware in the season after, as United fought back to reclaim glory, and now the Serbian believes the Blues will face a similar problem.
Speaking ahead of the 2012-13 term, Ivanovic said: "It's going to be very tough for City. It was the same with us.
"When you win the league all the other teams, big or small, fight and have extra motivation against you. A lot of teams will be going for the title this season."
Despite winning both the FA Cup and Champions League titles in 2012, Ivanovic is also eager for Chelsea to improve on their league form of last season, which saw them finish sixth. He added: "It's true, we have to improve in the league. Everybody inside our camp knows that."