Can't tell you if it is safe for you to drive or not, you'll have to have a look for yourself, a rubbing noise could be one of a number of things....Could be a bit of trim lose and rubbing on the tyre, broken spring rubbing on the tyre, worn brake pads (They are designed to give an audiable warning) worn wheel bearing, you could have road debris jammed somewhere it can rub on a tyre or a stone jammed in your brakes........My money is on worn brake pads