Cardinal Cholet was commissioned by his long-time friend, Pope Martin IV, to preach the Aragonese Crusade in 1283. The date on his commission as Legate in France is 9 April 1283. On 27 August 1283, he was granted the faculty of transferring the "vacant" throne of Aragon and the County of Barcelona to one of the sons of King Philip of France. On 3 September 1283, Pope Martin ordered all of the ecclesiastical persons in France to give 10% of their income for three years to the King of France for the Crusade against Pedro of Aragon. He ordered Cardinal Cholet to see to it that these contributions were paid, even by the monastic orders, Templars and Hospitallers. On 10 January 1284, the Pope prodded him to get on with the business: Prince Charles was finally chosen, after long negotiations with Cardinal Cholet, and Pope Martin IV confirmed his appointment as King of Aragon and Count of Barcelona on 5 May 1284. On 4 June 1284, Cardinal Bernard de Languissel, Bishop of Porto, was ordered to preach the crusade against former King Pedro of Aragon throughout his legation in northern Italy, and Cardinal Gerardo Bianchi, Bishop of Sabina, to do the same in south Italy. The Pope even enlisted the Dominicans and Franciscans in Sardinia and Corsica to preach the crusade.