daredevil we did the same with Raya under Edu
Source? Could be wrong, but I feel fairly clear the double-sided option was new for HincapiƩ, and arose either because Leverkusen weren't happy with the kind of good faith agreement on that transfer we'd had with Brentford for Raya, or because the FFP/PSR type rules started reclassifying loans with mandatory transfers.
Either way, we know what we're doing these days, and as for PSG, maybe player image rights have been a redline for them because after all their lads are paid all that for the sportswashing.