Earlier quoted context omitted.
Or maybe they offered to buy it later (when?) at a price fixed today - discounted or not. If they don’t have liquidity (why?) they cannot buy it on the market.
Illiquid means you can't sell your position without lowering the price significantly. It could be that you need time to sell, or it could be that no one is stupid enough to buy it. The former can be fixed with a temporary loan, the latter in bankruptcy court.
But here we are, and I’m not sure if FTX was offering to buy with some favorable terms regarding the time of settlement in addition to a discount. They could have bought on the open market at the discounted price but they apparently didn’t…