In my books he's worth max 25 mil, he's not a special talent warranting a fee over 30 mil. He's not great at anything rather good at a few things. He doesn't have great vision nor he is an exceptionnal passer, he's not a good dribbler, things that are necessary for a Trequartista.
I would rather for us to get someone who will enable us to play the 4-3-3 than break the bank for mediocre Oscar.
Mediocre?
Ok, now i see it's just personal. You just hate the guy.
I know Oscar since his international/São Paulo days when he played a more offensive role, the Trequartista one and he was great at all those things, especially his vision and great passing. He didn't need to track back then and focused on creative forward plays to both strikers.
Now, what both Scolari and Mourinho did was realize he's a good hard working holding mid that can double on the flanks and gave him a much more defensive duty. Which IMO stopped him from progressing. I've a feeling if Allegri really gets him, seeing our team is set up, he might be played his old role again. And at that he's pretty good.