The Blaugrana will have to be up for a physical challenge against the Blues and will have to watch the Drog on Tuesday, according to the towering midfielder...
The Ivory Coast midfielder speaks to his compatriot in London on a regular basis and is relishing the prospect of playing against him when the Blues visit Camp Nou on Tuesday.
Chelsea are not a team that Toure would have chosen to face at the semi-final of the Champions League and thinks Barcelona will have to be strong to record a first leg win.
"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," Toure told The Independent.
"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.
"[English teams] are very strong physically. It's the country with three teams in the semi- finals and, for me, that's to be expected. Right now they are the best, and it's up to us to battle against the three English sides. In many ways, Chelsea are the worst opponents for us.
"You know that they are going to line up across defence, midfield and attack, with players of the very highest level. They are very powerful physically, which makes it more difficult, but we have to stand up for ourselves and make sure we win the home leg."
Lucas Brown, Goal.com