Managed second, even in temporary accommodation, that's clear (11)
I believe the answer is:
transparent
'clear' is the definition.
('transparent' can be similar in meaning to 'clear')
'managed second even in temporary accommodation' is the wordplay.
'managed' becomes 'ran' (I've seen this before).
'second even' becomes 'spar' (I can't justify this - if you can you should give a lot more credence to this answer).
'in' means one lot of letters goes inside another.
'temporary accommodation' becomes 'tent' (I've seen this before).
'ran'+'spar'='ranspar'
'ranspar' put into 'tent' is 'TRANSPARENT'.
'that's' acts as a link.
Can you help me to learn more?
(Other definitions for transparent that I've seen before include "See-through - easily understood" , "poor at lying" , "Unpolluted" , "Open" , "Obvious - ingenuous" .)