Chelsea defender Jose Bosingwa insists the club are not in crisis, although finishing outside the top four would be a 'disaster' for the club.

The Portuguese full-back has been one of manager Andre Villas-Boas' top performers this season, impressing in the Premier League despite a recent run of poor results that has seen the Blues fail to win in four matches.

And, having slipped behind Arsenal in the race to finish in the final Champions League spot, Bosingwa insists the club will fight until the end to overtake their capital rivals, as well as beat off competition from Newcastle and Liverpool to finish in fourth.

"To finish outside of the top four at the end of the season will be a disaster, so we promise to carry on fighting and we need the support of the fans," Bosingwa told reporters.

"The dressing room has confidence in the coach. Villas-Boas is a good coach and he's demonstrated that with his success in Portugal."

The former Porto boss is under pressure at Stamford Bridge, with owner Roman Abramovich a looming presence when recently attending a number of training sessions in recent weeks.

But, with Champions League football still to be played in west London this term, the campaign is anything but a crisis in the mind of the former Porto defender.

"This is not a crisis, but something from a bad run of results," concluded the 29-year-old.

"I think we can improve and move up the Premier League this season."

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