Kammala jumla mai zuwa: Thessalonica ya kasance a hannun Ottoman har zuwa 1403, lokacin da Sarkin sarakuna Manuel II ya goyi bayan babban dan Bayezid Süleyman a cikin gwagwarmayar Ottoman da ya faru bayan da aka ci nasara da Ottoman da kuma kama Bayezid a
Yaƙin Ankara da Turko-Mongol mai cin nasara Timur a cikin 1402. A musayar goyon bayansa, ta hanyar Yarjejeniyar Gallipoli, sarkin Byzantine ya tabbatar, a tsakanin sauran abubuwan da aka ba shi, dawo da Tasalonika, wani ɓangare na bayan gari, tsibirin Chalcidice, da yankin bakin teku tsakanin kogin Strymon da Pineios.