He left the Wales clash injured with two minutes remaining. Modric collided with Harry Wilson while attempting to halt a counter-attack by the hosts.
The Madrid midfielder was able to get back onto his feet and after receiving treatment from Croatia's medical team, asked to be taken off. He limped off the field without hardly being able to walk on his right leg.
But he has since stated this morning: "I have a bruise, which hurts a little and is swelling. It's big, but I think it's not serious and I'll be fine in a few days.
"It is an injury that Dr. Jankovic (the Croatian national doctor) said was unpleasant, but should not be long. He immediately communicated it to the doctors of Real Madrid."