Maybe Yoko takes a paper -- oddly without obligation to buy (2,5)
I believe the answer is:
on appro
'without obligation to buy' is the definition.
I know nothing about this answer so I cannot judge whether it can be defined by this definition.
'maybe yoko takes a paper oddly' is the wordplay.
'maybe yoko' becomes 'Ono' (musician Yoko Ono).
'takes' is an insertion indicator.
'oddly' indicates alternate letters (letters in the odd-numbered positions are used).
The alternating letters of 'paper' are 'ppr'.
'a'+'ppr'='appr'
'ono' placed around 'appr' is 'ON APPRO'.
Can you help me to learn more?
(Other definitions for on appro that I've seen before include "for testing?" , "facing trial" , "Waiting for green light" .)