"It's not a big problem. I just got a small tear in my calf and hopefully it should be fine for me to train again next week," the Brazilian told the club's official website.
"When you have a big injury like I had and then play some games, it's normal to get small problems. I'm just glad this happened when there was an international break coming up so I didn't miss too many matches.
"I've had a bad time with injuries since I came to Liverpool but I prefer not to look back. I want to look to the future and hope I can show the fans what I'm capable of."
