Yaya Toure says Ivory Coast teammate Didier Drogba is the biggest threat to Barcelona's Champions League hopes as they prepare to face Chelsea.

Toure said: "He is my colleague in the national team and a big friend of mine away from football. He's someone I call and speak to a lot.

"He's a phenomenal forward, up there with Samuel Eto'o and probably the best in the Premier League. It's the first time I've had to play on the opposite side to him. I'm usually happy to have him on the same team. Right now he's their best player."