"We knew we were in a group with two of the best teams in the world but I'm not anxious about my team".
Dalic's side had not managed a goal in the competition until they defeated Spain 3-2 in Zagreb on Thursday but could now top Group A4 and advance to next year's finals stages.
After playing in 70 matches during the 2017/18 season including those on worldwide duty and in the FIFA World Cup 2018, Barcelona's Ivan Rakitic was expected to have some rest, but it has looked like the 30-year-old and the word "rest" have become anonymous.
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"Tomorrow [Sunday] we will play how we know we can play".
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Sky News footage showed people covering their mouths and some coughing, along with a man who appeared to have collapsed and was being treated by police.
Both in attack and defense, the team was playing well again. A draw would see leaders Spain clinch top spot in Group 4.
The former Sevilla player made way for Nikola Vlasic on the 67th minute after seemingly pointing to his hamstring, an injury to which could lead to a lengthy lay off for Ivan Rakitic and pose as a threat to Barcelona.
Inter Milan midfielder Ivan Perisic feels that may been as a result of their exertions in the World Cup in Russian Federation, where they reached the final before losing 4-2 to France in Moscow. "There are young players who need confidence and there is a lot of room for improvement". He has been gradually experimenting with youngsters. The hosts will be without defender Sergio Ramos, who will be rested because of a muscle ailment.
"I'm optimistic", Luis Enrique said.
Croatia, the 2018 World Cup runner-up, has struggled since its success in Russian Federation and sits in last place with one point-though it could still top the group if it beats Spain and then England on Sunday.