If the Church of England doesn’t have any ... structures? ... under which this man (presumably sincere) could live a circumscribed life of repentance, that’s very sad. And if the Catholic Church does have such a ... facility? organization? ... couldn’t the gentleman live there without converting, unless he truly believes and professes all the Holy Catholic Church holds to be true?
“Not a good reason to become a Catholic.”
No, it isn’t a good reason in itself, but if he makes a sincere confession and receives absolution his soul might be saved. God’s grace if for everyone who is repentant.
Or is it?
He can use the Sacrament of Penance and know that he is forgiven and that God has forgotten his sin.
Perhaps he will worship at quite Benedictine Monastery like the one in Pluscarden (spelling), not a parish with young people, can live a life of repentance and prayer and solitude.