Sensing that Serbia is too weak to defeat a future Ottoman incursion on the battlefield, he managed to make a deal with sultan Mehmed II on January 15, 1457.
Tundes, et Serbia on liiga nõrk tõrjumaks tulevasi Osmanite rünnakuid lahinguväljal, suutis ta 15. jaanuaril 1457 teha sultan Mehmed II-ga tehingu.