Croatia star Nikica Jelavic has missed Saturday's training session with a fever ahead of Monday's crunch clash with Spain.
Jelavic was rested as a precaution after complaining of a high temperature but is still expected to be fit for the Group C decider, according to index.hr.
The Everton hitman is crucial to Croatia's hopes of qualification to the knockout stages and manager Slaven Bilic will be desperate to get the forward fit.
Croatia face Spain in Gdansk on June 18 in a vital game.