Jose Mourinho insists Chelsea considered every possibility before signing Radamel Falcao

Chelsea manager Jose Mourinho is confident he can once again bring the best out of Radamel Falcao, insisting the striker thoroughly convinced the club he is not suffering from any physical problems.

The Premier League champions opted to give the Colombia international another opportunity in English football after Manchester United decided not to sign him following a disappointing loan spell at Old Trafford last season. Falcao struck just four goals during the 2014-15 campaign as he failed to rediscover the form that once made him one of Europe's most feared strikers.

A cruciate ligament injury suffered in January 2014 while playing for Monaco is blamed for the striker's fall from grace but Mourinho insists the club have done their research and see no reason why he can't return to those heights.

"We had a very exhaustive analysis of his condition before we made a decision, our doctor had real work to investigate all of that," he told ESPN. "He is not, for sure, a physical problem. So if it's not physical, we can make him score goals again."

On transfer deadline day last season, United shocked the Premier League by bringing Falcao in on a season-long loan from Monaco, a decision Mourinho admits left him very worried.

"We he went to Manchester United I have to say I was a bit scared because he's a predator in the box and a guy who does score goals all the time," the Chelsea manager continued. "He did that in every club in every league, so I was convinced he was going to do that in our league."

With Diego Costa recovering from a slight hamstring problem suffered in the club's recent pre-season friendly with Barcelona, Falcao will be in line for his Chelsea debut on Sunday 2 August when the Blues meet Arsenal in the Community Shield at Wembley.