Kromkamp said: “We know how to get at Liverpool. They have plenty of weaknesses.
“They often revert to kicking long ugly balls up to Peter Crouch.
“The manager’s tactics change as soon as you frustrate his players and that is what we will be aiming to do on Wednesday.
“They have weaknesses in several places, especially in the gap between defence and midfield, and also at centre back.
“In one-on-ones, the two in the middle of defence are very good, but they cannot contribute to Liverpool’s build up play. So we will focus on that.
“If you block them from deep they soon lose their rhythm and start playing those long balls up to Crouch.”
