The Brazil international, who scored the second goal for the Reds, was substituted in the 74th minute of the Premier League encounter at Wembley.
“I’m not sure, but there may be an injury with Roberto, we don’t know exactly in the moment,” said Jürgen Klopp.
“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.”