Man of enviable riches (4)
I believe the answer is:
eric
'man' is the definition.
(I've seen this before)
'of enviable riches' is the wordplay.
'of' says the answer is hidden in the clue.
'ERIC' can be found hidden inside 'enviable riches'.
(Other definitions for eric that I've seen before include "-- Sykes; -- Idle" , "-- Clapton, guitarist" , "Rice turned for the boy" , "Boy's name" , "- the Red, discoverer of Greenland" .)