Well, either it means he could choose not to know the future, and you're suggesting he's still omniscient, because he could change his mind at anytime and look into the future and know exactly what is going to happen, or he doesn't know the future, we're not fated, and he's not omniscient. Which still means we're fated. Omniscience is simply an implication of fate. It is not a requirement of fate though; this has to do with the A implies B argument; omniscience implies fate, but this does not mean that omniscience must exist if fate exists. Or conversely, fate can exist even if there isn't a person who knows what will happen in the future. Fate simply means that whatever choice we make does not change the outcome. Thus free will is still redundant.