@Shekay, there's undoubtedly something about that plant: it has survived there for quite a long time. So if you were to tend it adequately it might provide you with a good crop. Definitely
I pick Dan's suggestion of only chosing a sucker or two once the plant has gone fully dormant. Also if your neighbors know anything about its fruit. That much work will outpay if it ends up by being fruitful...