Can only think it's being done to aid in some sort of ''creative" bookeeping to help us stay in line with FFP. I think that's part of the issue with us haggling so hard over prices this window too. Perhaps last windows spending plus Laporte in the summer has us a little stretched over this 3 year period (in FFP terms, the sheikh is obviously still loaded).
I don't know all the FFP fine print, just the broad brush strokes but I wouldn't be surprised if high grade secured debt is treated differently to direct cash injections from the owner. We know United and Barca are drowning in debt yet due to their revenue they are still able to spend exorbitant amounts.