Can grilled steak be eaten next day if refrigerated and the heated in the oven?
You certainly can do that, but if you are going to eat the steaks within three days I don't see the point of freezing them, it would be better to leave them in the refrigerator. But heating from frozen is safe. USDA guidelines are a little weird on reheating frozen food, personally I wouldn't even go there. If they were fine when they went into the freezer (or fridge in the last 3 days), they will be fine when you take them out. Just heat to the point of tastiness.