He's our best player, he and Shaw are the only two members of our squad at the minute who could perform in the Champions league in the future/become world class. Schneiderlin's defensive capabilities are well documented in football circles at the minute but his passing is also sublime. He's like a more mobile Xabi Alonso (although admittedly not quite as good).
He's only just signed a long term contract so he's not likely to leave us unless it was a ridiculous amount of money. We're talking 30m+, we're rich enough to turn down anything less for our best player if you ask me.
I like Schneiderlin, but no way is he worth anywhere near 30 million. I know that your chairman is notorious when it comes to making people overpay for your players (good for him, we could do with someone equally ballsy), but 30 million would buy Fabregas back, and i know who i'd rather have.