In Tabassaran, possessors of both arguments and obliques can control predicate agreement. This agreement replaces subject agreement on the predicate. Whether the possessor of an argument or an oblique or the subject controls agreement arguably depends on their relative discourse prominence.
Babaliyeva, Ayten. 2013. Études sur la morphosyntaxe du tabasaran littéraire. PhD dissertation, École Pratique des Hautes Études, Paris.
Kibrik, Aleksandr E. and Seleznev, Mixail G. 1980. Sintaksis i morfologija glagoľnogo soglasovanija v tabasaranskom jazyke [The Syntax and Morphology of Verbal Agreement in Tabassaran], in V. A. Zvegincev (ed.), Tabasaranskie ètjudy, 17-33. Moscow: MGU.