Can you help me out with this again, PB. Is this the situation?
City managed image rights for some players. So they made money from the players' image, then paid some of that to the players. The easiest way to account for that is as some image rights income and some image rights expenses. But City needed some more income to meet FFP, so the club came up with the idea of selling some or all of those rights to a third party, in return for a one-off payment. Meaning we got money up front from the third party to help our FFP, then the third party commercialised the rights, earning money and paying the players a share of it.
Now, FFP didn't like that for two reasons: first it generated income that helped us meet FFP (we thought) and secondly because it confuses the position on amounts paid in total to players which, it seems, is important to them for some reason.
UEFA raised this with the club but didn't pursue it in their charge sheet. Why? No idea. Maybe because it was a perfectly valid business transaction, accounted for properly, and supported by legal and fiscal opinions, who knows? In any case, the activity was brought in-house again in 2018, probably as a result of negotiations with UEFA?
Is that it, more or less?