“I’m not sure, but there may be an injury with Roberto, we don’t know exactly in the moment,” Klopp told Liverpool's official website. “It’s something with his eye, we will see. I didn’t see it back. I only saw the situation from around 60 yards. I have no clue what exactly happened. “But it’s something with the eye and for sure in the moment it’s not comfortable for him. We will see.” Liverpool supporters will hope that Firmino makes a swift recovery ahead of Tuesday's Champions League clash at home to Paris Saint-Germain.