Now star centre Hook is willing to drop back to fill the void left by Byrne.

BBC: James Hook happy to fill Wales full-back role

The Blues approached Welsh rivals the Ospreys to enquire about the availability of Wales and British and Irish Lions star James Hook but the enquiry was rejected.

BBC: Cardiff Blues not blaming Sam Norton-Knight

Hook, 23, was tipped to establish himself as a global star following his stunning home Wales debut against Australia in November 2006.

BBC: Hook's best position not settled

Fellow British and Irish Lions star Shane Williams is close to a return to action, along with James Hook and Alun Wyn Jones who were injured last month.

BBC: Wales given Six Nations fitness boost

Sir Elton returned later to perform in another all-star collaboration, paying tribute as he did so to the 26 people killed in the Sandy Hook Elementary School shootings last December.

BBC: Grammy success for Fun, Gotye and Mumford and Sons