Sorry, but Cardinal Muller was educated at the Seminary of Regensberg, the seminary founded by Joseph Ratzinger[ in the mid 1970's], as one of three founders .  It was one of the most doctrinally conservative seminaries in Germany.  


In fact, Ratzinger left the University of Tubingen---one of the most creative and important centers of Catholic thought [founded by Johann Sebastin Drey in the late nineteenth century]---because the university had a very different way of understanding theology.  Theology was studied from the concrete life of the Christian community.  As such, this university was in perfect alignment with the teachings of Vatican II.  Cardinal Walter Kasper is a distinguished representative of the Tubingen School.