Newspaper that is absorbing another publication? It looks exactly the same (6,5)
I believe the answer is:
mirror image
'it looks exactly the same' is the definition.
The definition suggests a singular noun which matches the answer.
'newspaper that is absorbing another publication?' is the wordplay.
I cannot quite see how this works, but
'newspaper' could be 'mirror' (Daily Mirror) and 'mirror' is found in the answer.
'publication?' could be 'mag' (abbreviation for magazine) and 'mag' is found in the answer.
'that is' could be 'ie' (short for Latin 'id est', 'that is') and 'ie' is found in the remaining letters.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for mirror image that I've seen before include "reflection" , "Reversed appearance" , "Opposing view" , "Exactly reversed picture" , "True reversal" .)