Wales manager Chris Coleman has identified Luka Modric as the biggest threat as his team prepares for Croatia on Tuesday night.
The Welsh side host the Croatians in Swansea in Group A qualifying and Coleman is well aware of the capabilities of Real Madrid star Modric who will again run things in the middle of the park for Igor Stimac.
"Croatia have impressed me the most - offensively they're very aggressive and they're quite physical and obviously they've got a guy in the middle of the park, Luka Modric, who would grace any team," he said about his third-placed team's chances against second-placed Croatia.
"This will be a very tough game for different reasons than Friday but we've got to play our own game. We passed the ball very well at Hampden Park (in the 2-1 win over Scotland) and were very exciting. We have to have that same philosophy.
"Sometimes you get results and sometimes you don't but the important thing for Wales is that we've got a style of play we're trying to evolve."
