It is showing Available Now for me on GameFly.
I assume it is the same for mist4fun.
So it should ship for him today, and take 1-4 days for it to get to him and then 1-3 days for him to train it on the Xbox One via BC to see if it can fix the aim. But I doubt it, because it still feels really off, even with the Xbox One controller.
If it still says Very Low Availability for him then don't expect it for weeks. Because GameFly is very slow with the availability for very popular rented games.