John Obi Mikel insists that he is unworried by the growing list of world class midfielders rumoured to be arriving at Chelsea.

The 21-year-old Mikel, who was brought in by Jose Mourinho in 2006, says he is ready to prove himself against any competition, however.

"I don't know him (Scolari) and I have not met him before," Mikel said in an interview with Brila FM.

"I don't even know what to expect from the coach because we have not spoken yet.

"I will only be able to say something about him when we meet during pre-season.

"I am not afraid to hear about one player or the other coming to Chelsea. It's something that makes me stronger.

"You should know that I would have left Chelsea long ago if I had been scared or something like a chicken-hearted player."