On 2 January 1551 the chapter of canons approved the model for the presbytery by Michelangelo Buonarroti to replace that of Jacopo Sansovino. The design of Michelangelo was completed within the next few decades.
In January 1551, a council of canons accepted Michelangelo Buonarroti's blueprint for the presbytery, replacing that of Jacopo Sansovino. It took several years for Michelangelo to complete his design.