Chelsea boss Jose Mourinho rates Branislav Ivanovic among their best ever signings. Ivanovic struck the winner against Aston Villa on Saturday.
Mourinho said: "Any striker in the world would be proud to score that magnificent goal, so imagine a right-back, whose best foot is not the left one, it is amazing.
"He is a great guy and what he is doing for us is unbelievable. He has fantastic courage.
"I think he's one of this club's best ever signings. He has made a fantastic contribution for this club. He is a competitive animal with a big heart."