If there is a hardcore of half that number,4 thousand,the shortfall could be made up by that hardcore paying the equivalent about of cash,per month,of the missing spectators entrance fee.
There will be many who can only afford half that amount; just as there will be many who can afford double.
The scheme could be given an original title like - SOS - Supporters of Salford.Or,Signings of Supporters.
Or,Supporting of Salford.
I think it is called a generic term so it can be used for obtaining funds from general members of the public should they wish to donate at specific times;perhaps in time of trouble.
All it would take is someone from the club to start the idea or better still,a request from the coaching staff.
(Banking details,of course )
Waiting for other people to do things usually means it never gets done.
If you don't ask you don't get.
Sometimes though,you can ask and still not get.
If supporters show willing,rich investors may do likewise.