Sigismund saw a potential ally in Austria; he sought to establish a Catholic league that would actively engage in the Counter-Reformation. Zamoyski openly condemned Sigismund for associating with the Habsburgs, particularly Archduke Ernest, and speculated that Ernest was to be the potential successor if Sigismund abdicated and returned to Sweden. The anti-Austrian sentiment was only explicable as a circuitous attempt to traverse the Habsburg hegemony and influence in Central Europe, which Zamoyski perceived as a major threat. However, the parliament immediately rejected the proposal and ruled in favour of Austria, thus also accepting a marriage between Sigismund and Anne of Habsburg. Furthermore, the reestablishment of peaceful relations with Austria was dictated by the Treaty of Bytom and Będzin from March 1589 which was negotiated by Ippolito Aldobrandini, future Pope Clement VIII.