Clapton of rock (4)
I believe the answer is:
'clapton of rock' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for eric that I've seen before include "Blair, perhaps" , "Cantona or Clapton?" , "Ancient blood-money; Ernie's partner" , ".... the Red, Norwegian explorer who discovered Greenland in 10th century" , "---- Roberts, actor brother of Julia" .)