I found these Forest fans views on Oliveira on the Pinkun board:
"Oh he's not the same type of striker as Britt, he's not a pure Predator - I think he's better than that. He's more of an all round striker who can contribute far more than just goals, but given enough chances and he clearly has the talent to bury them. I don't take too much from his previous record as he barely played for Swansea and when he did it was often as a sub in stoppage time. Prior to that well who knows, though his record for Rennes was alright.
I've never bought the idea that he isn't a goal scorer, or at least can't be, we've just not created that many chances for him and if we do, I believe he can score plenty. Not as many as a poacher like Britt but he doesn't have to be Britt or Jordan Rhodes - he has enough to his own game that can offer us a lot. Interestingly, he's only scored two less goals than Jordan Rhodes so far this season. He has a lot of talent and hopefully he can continue to build on it.
Would try and do almost whatever we can to convince him to join the club on a permanent next year. Got so many players on high wages that just don't contribute enough and in comes Nelson looking fully fit, working his ** of and burying chances when they come. Genuinely think he's too good for us and would have far more goals if we created more chances. I'm surprised he has 8 already given we don't score more than 1 a game usually and he doesn't always play.