Boxing periodical that may be salvaged (5,5)
I believe the answer is:
scrap paper
'boxing periodical that may be salvaged?' is the definition.
The definition suggests a singular noun which matches the answer.
This is all the clue.
Can you help me to learn more?
(Other definitions for scrap paper that I've seen before include "somewhere to make notes" , "What shamefaced News International decided to do" , "Make jottings on this!" .)