Well I have been saying that he is worth about 20 million for ages now, and I think that's about how much he will end up going for, to a manager who regularly chose to play him upfront. It certainly won't be for the 25million+ some people value him at.
I didn't say he makes our other strikers (who are crap) score more goals, I said he brings other players into play in an advanced position, which includes wingers, full backs and central midfielders. He doesn't try to take the world on when the ball is played to him, he very often passes it to one of our players in an advanced attacking position.
We are going to massively miss Fellaini's attacking prowess this season, whether it's because he goes to United or because Martinez plays him further back.