Red-headed Viking explorer (4)
I believe the answer is:
eric
'red-headed viking explorer' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for eric that I've seen before include "Rice turned for the boy" , "Blair, perhaps" , "---- Cantona, Manchester Utd favourite of the 1990s" , "Mr Clapton" , "-- Idle; -- Morecambe" .)