The Sevilla player highlighted Spain-based midfield duo Luka Modric and Ivan Rakitic as the dangermen for Zlatko Dalic's side.
"We know that Croatia has those two players in the centre who have good control of the ball. They try to take a lead role too and they have other very good players.
"They're a difficult team, very dangerous. We already knew that when the draw was made. I imagine it will be a tough game, hard fought and we'll try to take control. I think it's going to be a very even match."
Coach Jorge Sampaoli was blasted by Diego Maradona after the Iceland game, with the 1986 World Cup winner warning he would not be welcome back home unless he changes his tactics.
"Playing like that, he can't come back to Argentina," the 1986 World Cup winner told Venezuelan television after Lionel Messi missed a penalty in the 1-1 Group D stalemate in Moscow.
"It's a disgrace. Not having prepared for the match knowing that Iceland are all 1.90m tall... I get the feeling there's a general anger at the heart of the team," said Maradona, himself a former national team coach.
Maradona avoided criticising his Messi and instead pointed the finger at Sampaoli.
"I don't blame the players. I could blame the lack of work rate. But I can't blame the players, much less Messi, who gave it all he had," he said.
"I missed five penalties on the spin and I was still Diego Armando Maradona. I don't think that they dropped two points because Messi missed a penalty," added Maradona, who led Argentina to the quarter-finals in South Africa in 2010.