Similar arrangement as yours truly (4)
I believe the answer is:
same
'similar' is the definition.
(associated in meaning)
'arrangement as yours truly' is the wordplay.
'arrangement' is an anagram indicator.
'yours truly' becomes 'me' (the person that set this crossword).
'as' with letters rearranged gives 'sa'.
'sa'+'me'='SAME'
(Other definitions for same that I've seen before include "If - be the food of love, play on (Twelfth Night)" , "Equal in amount or value" , "Identical, unchanged" , "uniform" , "Identical or similar" .)