Typical click-bait; An extremely bold prediction with an article that takes less than two minutes to read with a re-direct to another Bloomberg article about a less-sexy potential Amazon acquisition.
I don't know anything about retail but I'd have thought they were more likely to buy Kohls: Target seems pretty successful at what they do hence expensive, while Kohls seems sort of directionless but they have stores most places. They also have an arrangement already with Amazon for BnM returns.