Jean went back to the Levant in the end of the 1280s. In 1289, he led a French regiment from Acre to the besieged city of Tripoli, until the Fall of Tripoli in April 1289. Following the fall of Tripoli, Jean was sent to Europe by king Henry of Cyprus to warn European monarchs about the critical situation in the Levant. Jean met with Pope Nicholas IV who shared his worries and wrote a letter to European potentates to do something about the Holy Land. Most however were too preoccupied by the Sicilian question to organize a Crusades, as was Edward I too entangled in troubles at home. Only a small army of peasant and unemployed townfolks from Tuscany and Lombardy could be raised. They were transported in 20 Venetians galleys. They were led by Nicholas Tiepolo, the son of the Doge Lorenzo Tiepolo, who was assisted by the returning Jean and Roux of Sully.