Where one reading a newspaper might be old-fashioned (6,3,5)
I believe the answer is:
behind the times
'old-fashioned' is the definition.
(I've seen this before)
'where one reading a newspaper' is the wordplay.
'where one reading' becomes 'behind' (I can't justify this - if you can you should give a lot more credence to this answer).
'a newspaper' becomes 'thetimes' (I've seen this before).
'behind'+'thetimes'='BEHIND THE TIMES'
'might be' is the link.
Can you help me to learn more?
(Other definitions for behind the times that I've seen before include "Out-dated" , "as Rupert Murdoch is?" , "not being updated?" , "no longer seen as old-fashioned" , "like our competitors slow on to a story?" .)