I heard €75k but haven't properly sat down and had a full on discussion about a plan of attack. I'm sure a deal could be done to be paid that ceiling each year until the total amount has been reached...you'd want to really trust who you sold it to
Forestry sales exempt from income tax, might be an annual ceiling on how much, €85k is in my head, there is something to watch out for, sell it after harvesting so you could offset the harvesting cost against tax, sell as standing and you can't.