John McFarlane, the chairman of Barclays, is on the hunt for someone new to run the bank following the board's decision to sack Antony Jenkins.

Some expect McFarlane to cast the net far and wide in the search for the right person to take over at Barclays, as he did at Aviva, but others suggest the UK bank is not short of strong internal candidates for the post and the answer could lie closer to home.