Trod carefully with advice to my boss (7)
I believe the answer is:
tiptoed
'trod carefully' is the definition.
'with advice to my boss' is the wordplay.
'with' means one lot of letters go next to another.
'advice' becomes 'tip' (I've seen this before).
'my boss' becomes 'ed' (abbreviation for editor, the setter's boss).
'tip' put next to 'to' is 'tipto'.
'tipto'+'ed'='TIPTOED'
(Other definitions for tiptoed that I've seen before include "Walked carefully" , "Went silently, carefully" , "Walked as quietly as possible" , "Moved cautiously" .)