I did a little calculated estimations based on the availablity numbers CFC has on their seasons tickets interface. The site suggests that there are 2,957 seasons tickets left up for grabs. Granted I don't know if this includes the officers club or not.
If the sections totals
here are correct, there are 4994 seats available if you don't include officers club or general admission, or accessible seating.
FWIW That means something like 2,037 tickets sold so far. Likely closer to 2,200 if you include the officer club and accessible seating ( granted my math and estimates could be wrong).
I have a hard time beleiving that many more will be sold before single tickets are on sale, and after that it will be nearly impossible to know how many seasons tickets were sold.