The Brazilian left back was replaced by Andrea Dossena after the ongoing problem flared up again during the first half.
Aurelio was today undergoing a scan to assess the extent of the damage. but is hopeful that it is not too serious.
He told the ECHO: “I have a problem with my calf, I felt it during the first half so it was better that I came off.
“I will now have a scan to see what the gravity of the injury is.” but hopefully it will not be too bad.”