 He also engaged on a diplomatic career, travelling to Padua, Venice, Florence, Rome, Milan, Mantua, and Bologna, and also to Bourges, where he tried unsuccessfully to set up a printing press.Bernandin Bochetel, now abbot of St Laurent des Aubats, had several times invited him to Vienna, and he finally went there in November 1560.Bochetel may have wanted his diplomatic services at this time to help him in difficult negotiations with the German Lutheran princes, or with the colloquy of Poissy of 1561 between French reformers and Catholics, or with the Council of Trent, which after a ten-year interval had resumed its sessions in January 1562.