Chelsea defender Fikayo Tomori says that he is aware of the threat posed by Ajax star Dusan Tadic.
The two European heavyweights are set to do battle in the group stages of the UEFA Champions League on Wednesday.
The Blues will be hoping to pick up a win to get them level on points with Ajax in the group.
And Tomori knows that controlling Tadic is an important part of keeping Ajax's attack quiet.
"Last year in the Champions League, Ajax did so well and he was a very big part of that," Tomori said at a press conference.
"We know the kind of movements he likes to make. He's not the typical number nine running in behind, he likes to play with the ball and link up with the whole team.
"Sometimes as a defender you have to make a decision on the spot and go in to mark, or sometimes you have enough time to communicate to the midfielders in front of you.
"I'm sure the game will throw up those different situations and we'll have to deal with it and that's just part of the game."