Freely available by no apt arrangement (2,3)
I believe the answer is:
on tap
'freely available' is the definition.
(I've seen this before)
'by no apt arrangement' is the wordplay.
'by' says to put letters next to each other.
'arrangement' indicates anagramming the letters.
'no' after 'apt' is 'aptno'.
'aptno' is an anagram of 'ON TAP'.
(Other definitions for on tap that I've seen before include "Available (for drinking?)" , "kept in a cask" , "where C or H is seen?" , "Freely available" , "handy" .)