One doesn't fantasise about meeting celebrity type (7)
I believe the answer is:
realist
'one doesn't fantasise' is the definition.
I can't judge whether this definition defines the answer.
'meeting celebrity type' is the wordplay.
'meeting' says to put letters next to each other.
'celebrity' becomes 'alist' (I've seen this before).
'type' becomes 're' (I can't explain this - if you can you should give a lot more credence to this answer).
'alist' after 're' is 'REALIST'.
'about' acts as a link.
Can you help me to learn more?
(Other definitions for realist that I've seen before include "One's practically inclined" , "Pragmatic person" , "One seeing things as they are" , "Sensible and practical person" , "Is alert (anag)" .)