Well , sadly , Defour has an "agreement" with the club that if a "BIG" club comes knocking that he'll be allowed to leave if the price is right. Teams mentioned are the likes of Madrid, Liverpool, etc .. Everton is not in that category so Moyes will have to over-bid to get him now. It sucks because I'm convinced he would be great at Everton (only downside is that he'll show up Fellaini making all Toffees realize that Everton overpaid for the wrong Liege player last year ).
Maybe next year!