That stinks. I am surprised that the new owner, the cousins farmer, didn't offer the lease to you first if that was what he decided he wanted to do. That would have been the proper thing for him to do, IMO.
Farmer and his cousin do not get along. He may not even be farming it next year. She acquired it through a family death and passed down wills. Shame is the farmer and his elderly dad have farmed it all their lives, lots of blood and sweat put into it, but nothing put into it from a few of his relatives who got parts of the land. Another parcel is now owned by a relative in Cal., another piece by a guy from Texas. They have only seen these people 3 or 4 times in 30 years. Those parcels will probably get leased next.