He's worth more than Carroll but Carroll isn't worth anywhere near £35m.
Just 'cos clubs with infinite resources are throwing silly money around, doesn't mean the players are actually worth those amounts.
I don't know what Wenger said to Cesc last summer but he sent Barca away with a flea in their ear. IMO the time has come to sell him now though because ultimately if a player won't sign a new contract then each year our position gets weaker to the point he could walk away for free. IMO we have enough in midfield now without Cesc and our position is strong enough to get good money for him. Sell him now I reckon.