The Brazilian playmaker expressed his disappointment after being selected on the bench against Corinthians, but Benitez insists there is no rift with the player.
"Oscar is fine. He's a very good professional. We don't have any issue with him," he said.
"It's difficult for them but it's good for me because I have different problems. There's are no issues or problems.
"Oscar will have a lot of time on the pitch and I'm sure he'll be a great player for the club.
"Oscar's not happy because he's not playing and that's fantastic. There would be a problem if it was the opposite."