Declare that woman’s lad has moved (6)
I believe the answer is:
herald
'declare' is the definition.
(thesaurus)
'woman's lad has moved' is the wordplay.
I cannot really see how this works, but
'woman's' could be 'her' (belonging to a woman) and 'her' is located in the answer.
an anagram of 'lad' is 'ald' which is located in the answer.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
'that' is the link.
Can you help me to learn more?
(Other definitions for herald that I've seen before include "Ceremonial messenger" , "Bringer of news" , "Scottish newspaper" , "Presage for old announcer" , "Announce, presage" .)