After proper examination by his Catholic bishop and with the permission of the Holy Father, he would be then ordained first as a Catholic transitional deacon and then as a priest. If the former Episcopalian minister were single at the time of his ordination as a Catholic deacon and then priest, he would indeed take the vow of celibacy.
If the married former Episcopalian minister were ordained as a Catholic deacon and then priest, he would be exempt by a special favor from the Holy Father of making the promise of celibacy
; however, if he later became a widower, then he would be bound to a celibate lifestyle and could not remarry. In the future, if a lay member of one of these reunited parishes wanted to become a Catholic priest, he would be required to take the promise of celibacy
The promise of celibacy is waived as a favor to those married clergy, given their particular circumstances and their desire to unite with the Catholic Church. However, the Holy Father has repeatedly affirmed the discipline of celibacy on Roman Catholic clergy of the Latin Rite. (Outside the United States, the Eastern Rites do not require the promise of celibacy except for bishops.)
Pope Paul VI in his encyclical, “Sacerdotalis Caelibatus” (1967) reflected that celibacy is an identification with Christ, who Himself was celibate; an act of sacrificial love whereby a priest gives of himself totally to the service of God and His Church; and a sign of the coming Kingdom of God, where Our Lord said, “In the resurrection, they neither marry nor are given in marriage, but are like angels in heaven” (Mt 22:30).