On 7 July, three weeks after the battle, Sigismund sent his palatin Nicholas II Garay to negotiate with Vuk Branković about things that are in his and Serbian favor, where he confirmed in advance any agreements that they have achieved. Although both Nicholas and Vuk were married with sisters of Stefan, it was not uncommon at the time that strong neighbors, even relatives, to suppress the legitimate heirs to throne as juvenile. The outcome of these negotiations is not known, but already in the fall, Sigismund began an offensive against young Serbian prince Stefan. His forces have crossed the Sava River in October and early November were they occupied the fortresses of Borač and Čestin, at presents Kragujevac.