Current arrangement just right (5)
I believe the answer is:
ideal
'just right' is the definition.
(I've seen this before)
'current arrangement' is the wordplay.
'current' becomes 'I' (symbol for electric current).
'arrangement' becomes 'deal' (arrangement between two people or groups).
'i'+'deal'='IDEAL'
(Other definitions for ideal that I've seen before include "highly desirable" , "faultless" , "Paradigm" , "Utopian; yardstick" , "Paragon" .)