Keen to return, opening in Ramble? (8)
I believe the answer is:
divagate
'ramble?' is the definition.
(thesaurus)
'keen to return opening' is the wordplay.
'keen' becomes 'avid' (I've seen this in other clues).
'to return' shows that the letters should be reversed in order.
'opening' becomes 'gate' (a gate is an opening or entrance).
'avid' back-to-front is 'diva'.
'diva'+'gate'='DIVAGATE'
'in' is the link.
(Other definitions for divagate that I've seen before include "Stray, digress" , "Go off course" .)