Chelsea FC manager Jose Mourinho believes that the previous disagreements between him and club owner Roman Abramovich are over, and the Blues will be looking to fight for their fourth Premier League title under him.

The Portuguese was successful during his first spell with the club winning back-to-back Premier League titles but he left Stamford Bridge after disagreements with Roman Abramovich. Following his controversial spell with Real Madrid, the 52-year-old returned to Chelsea FC in 2013 and won the title in his second year with the club.

Mr Abramovich asked me to fight for titles – Jose Mourinho

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Mourinho accepted that there were some professional differences between him and the Russian billionaire earlier, despite the two enjoying a healthy personal relationship. However, Mourinho believes that now the two are on the same page, personally as well as professionally.

Speaking in an interview with Sky Sports, as quoted by The Guardian, he said, “In my first period, my personal relationship (with Abramovich) was very good (but) professionally we had some interferences and a bit of a disagreement with some ideas.

“In this moment we don’t have this problem. When I left Real Madrid to come here, Mr Abramovich asked me to fight for titles.

“In my first season we were almost there, in my second season we did it and in my third season if you are close, you can always do it.”

Mourinho believes five or six clubs will be challenging for the title this year

The Portuguese was also of the opinion that five to six club’s will be challenging for the Premier League title this year, while emphasizing on the investment made by some of his rivals. Earlier, the outspoken Portuguese had accused his rivals of trying to buy titles while implicating that Chelsea FC were operating on a shoe-string budget.

a The top five are the top five, and why not a club like Tottenham to get in there?a he said. a But in the end history plays a part and investment plays a part. Chelsea [were] four times champion in the last decade. Arsenal are a fantastic club with great players. Liverpool have amazing investment.

a Man City is a squad to love and a club with two Premier Leagues in the last four or five years. And Man United with everything a the history, the players, the investment. So everybody will be there.a

Mourinho’s 13-match unbeaten streak against Arsene Wenger came to an end when the Blues lost to Arsenal FC in the Community Shield on Sunday. However, the club would now be looking to begin their title defence against Swansea City on Saturday, with an aim to become the first team to retain the title since Manchester United did it in 2009.