My Landlord Wants to Sell, Am I a Priority over the Safer?

Operator, I am a farmer operating 3.5 ha per lease notarized since 1990. The owners have entrusted the sale of these parcels by order of sale to the Safer. I have received documents entitled "Unilateral promise of purchase" indicating the price requested, the fees of notary and the Safer. It is specified "special conditions" called "specifications" including a "preferential pact" and "disposal" to the Safer in case of alienation of the property …