Thus leaving John with a fee simple determinable and the grantor a possibility of reverter. Normally, a possibility of reverter follows a fee simple determinable. The possibility of reverter can only follow a fee simple determinable. The conversion of Reverter could support this thesis. Antonio de Sala-Navarro and Reverter carried out further repairs and alterations between 1980 and 1992. With the fall of the Almoravids, Reverter then served the Almohads. Reverter agreed to lead this force, with the express permission of the count of Barcelona.