Chelsea captain John Terry rates their midfield as the best in the Premiership.
"It's probably the strongest midfield in the Premier League, the manager has some tough decisions to make," he told Chelsea TV.
"Deco looks unbelievable. It's early days but I'd already say he is one of the best I have ever played with. There is great competition in midfield. Hopefully, Ballack will continue his form this season and Essien is on fire as well."