Mladen Petric is fully focused on the upcoming game against England after helping Croatia to a 7-0 win over Andorra at the weekend.
The Basel striker netted four times in Saturday's thrashing in Zagreb to put Slaven Bilic's men within three points of England at the top of Group E.
Bilic has already admitted that Croatia face the toughest test of qualification on Wednesday in Zagreb and Petric is adamant the entire squad will be ready for the visit of England.
Steve McClaren's men were unable to break down Macedonia at home at the weekend and will travel to Croatia in determined mood.
Petric is expecting a backlash from The Three Lions in midweek but believes Croatia can complete a miserable few days for McClaren with the backing of the home fans.
"We have a very young team now and we have played the first two games in this qualification," Petric told Sky Sports News.
"We played well in the game against Andorra, it was very good, but now, against England, I think it will be the first game which shows us how strong we really are.
"They (England) lost two points at home, so maybe they are a little under pressure now, but I think we have a good chance.
"We play at home, we have a big crowd at home. I think the stadium will be full. Our fans always push us to the maximum.
"If we have a good day like on Saturday maybe we can beat England."