Perseus left a strong garrison in Gonnus (which was in the Vale of Tempe, at the entrance of Macedon) and then went back to Macedon for the winter. He sent a governor to Phila to try to win over the Magnetes (a tribe to the east of Thessaly) and went to Thessalonica with Cotys IV, the king of the Odrysian kingdom of Thrace and the commander of the Thracians. They heard that Autlebis, the chief of a Thracian tribe (possibly the Caeni) and Corrhagus, one of Eumenes' commanders, had invaded one of Cotys' territories. Perseus let Cotys go to defend it and gave his cavalry only half of the year's pay. Publius Licinius heard that Perseus had gone, and attacked Gonnus in order to deny the Macedonians a convenient descent into Thessaly. However, he gave up because its citadel was impregnable. He took a number of towns in Perrhaebia, including Malloea and Tripolis, and returned to Larissa.