Exactly what I was thinking, not a crafted goodbye, but written solely by him and not edited - no PR-person would allow the 'good luck except when I play against you!' line - which is one of my favourite parts really.
Au revoir dear Alexis
My guess is the release clause is more a minimum fee clause, i.e. we'll let you go for bids over 45m, but we'll accept the largest one. It may well be however that Mac is so determined to go to Liverpool and nowhere else it doesn't matter if Chelsea bid higher, so the minimum fee becomes in...