I don't believe UEFA/FIFA will ban outright third party ownership. The issue was more of a UK concern following on from the Tevez debacle. FIFA Article 18 (bis) does ban third parties having influcence over clubs and it doesn't appear they will strengthen that provision.
The interesting consequence is that UEFA will be using the same FFP barometer to ascertain each clubs accounting submissions for FFP compliance but some non-PL clubs will simply have less transfer amortisation costs because they do not have to shell out the entire transfer fee before being able to complete a player's registration as (PL clubs have to). I believe it is not a UEFA/FIFA problem but more a domestic issue that the FA and PL may need to consider.