Owen Sound Attack general manager Dale DeGray said on Wednesday that the injured centre will not play for London this season despite the Knights claiming the Stratford native on overage waivers on Tuesday. "From everything I've been told, it's not going to happen," DeGray said. "I've talked to Colorado and they said he's not ready to play. He hasn't passed clearance for full practice. I've talked to Joey several times. He's not ready to play." And it's unclear if Hishon will suit up at all this season as he's still struggling with post-concussion symptoms after taking an elbow to the head during the 2011 MasterCard Memorial Cup tournament in May.