Penny arranged prison visits (5,2)
I believe the answer is:
drops in
'visits' is the definition.
(dropping in is a kind of visiting)
'penny arranged prison' is the wordplay.
'penny' becomes 'd' (pre-decimalisation abbreviation for penny).
'arranged' is an anagram indicator.
'prison' is an anagram of 'ropsin'.
'd'+'ropsin'='DROPS IN'
(Other definitions for drops in that I've seen before include "Comes to see" , "Casually visits" , "eye thus getting less inflamed?" , "Calls casually" .)