Show agreement around the heartless and famous (5)
I believe the answer is:
noted
'famous' is the definition.
(noted can mean well-known or famous)
'show agreement around the heartless' is the wordplay.
'show agreement' becomes 'nod' (I've seen this in another clue).
'around' means one lot of letters goes inside another.
'heartless' means to remove the middle letters.
'the' with its middle removed is 'te'.
'nod' enclosing 'te' is 'NOTED'.
'and' is the link.
(Other definitions for noted that I've seen before include "Famed" , "Famous, well-known - entered into little book" , "Significant" , "Celebrity" , "Gaiter; oyster spawn" .)