Let's assume 15m over 5 years, under FFP amortisation that's 3m per year.
If Lorient can pay us 3m or at least something towards that, this whole thing can be limited in terms of FFP impact on us for a while.
Then they get another year from a player they probably didnt expect to get. Eventually we'll have a chance to bring the guy in ourselves. He's an asset on the books.
It is weird, but I suspect there's folks on either side of the Channel who have thought this through.
All that said - this should not be some of our first business of the summer! If we'd already gotten full backs and midfielders in, were ready to go this season, and then had a bit of spare capacity for multi club structure shenanigans... then ok.