It`s already at 5 million according to VGcharts, maybe 500k~1 million more as digital sales, and it`s keeping it`s legs. Do you think it has a shot at 10 million or more? I think it will, since we still have to wait for discounts, re-releases will all DLC on disc and a likely PC release late 2017 or sometime 2018.
And it`s selling well on Xbox One, 800k units is nothing to be ashamed of, mainly for a game that isn`t the core audience of the platform.