Clapton or Idle (4)
I believe the answer is:
eric
I believe this is a double definition.
'clapton' is the first definition.
(I've seen this in another clue)
'idle' is the second definition.
(I've seen this before)
(Other definitions for eric that I've seen before include "Blair, perhaps" , "- Morecambe, comic" , "Cantona or Clapton?" , "Mr Clapton" , "Boy's name" .)