I am not much of one for believing in reincarnation but if the present ABC is correct then it is possible that his successor was one of the oxen lowing at the birth of Jesus :)
No, seriously, ++Rowan says his successor will need the constitution of an ox . Scouting about the net I see that already the pundits are lining up names for betting on ++Rowan's successor. On the one hand ++John Sentamu gets mentioned and then more or less dismissed ... which is a mistake surely because among his estimable qualities he does seem to have the constitution of an ox.
On the other hand in respect of +Dark Horse being appointed, I haven't see any mention of my +Dark Horse, nor, indeed, any mention of another one voiced to me by someone whose inside track on these things I have a great deal of respect for.
I suggest that the key thing to look for is not the person who has a CV full of qualities for the post but someone who has human qualities for the post which will be recognised by the Communion at large when they are appointed.