Watch Hamburg vs Hertha Berlin Live Streaming
Watch Hamburg vs Hertha Berlin Live Streaming"Africa has always had big, strong strikers, players like George Weah.
"But if Didier carries on and 'The Project' goes its full term, then I think he will be the greatest."
Stoke head to Stamford Bridge as rank-outsiders but Diao does not believe there is a huge gulf between the sides.
In their last two encounters two 94th-minute winners gave Chelsea the edge and that, says the midfielder, gives them encouragement.
"The good thing is that every time we play a big game, everyone is up for it," he added.
"Nothing is impossible. We have been playing so many games where people write us completely out, but that gives us more motivation to disappoint those people.
"We believe that on our day we can beat anybody."
