Croatia boss Zlatko Dalic plans to speak privately with Dejan Lovren after the Liverpool defender's unsavoury comments about Sergio Ramos on social media.
Thursday night's 3-2 win over Spain in Zagreb means plenty is at stake for World Cup finalists Croatia against England at Wembley on Sunday.
Lovren is expected to feature but caused controversy after Thursday's victory when he criticised Ramos in an Instagram story, which has since expired.
The 29-year-old appeared to suggest he had elbowed the Real Madrid defender and Spain captain, who was involved in the clash which ended Liverpool forward Mohamed Salah's participation in May's Champions League final.
It is unclear if UEFA will take disciplinary action, while Dalic said: "I will talk personally with Dejan, but that will stay between us and the squad. I don't want to talk publicly about this."