Not quite reaching Havana? (5,3,2,5)
I believe the answer is:
close but no cigar
Here is my best explanation:
'not quite reaching havana?' is the definition.
I don't know anything about this answer so I can't judge whether this works.
'not quite reaching havana?' is the wordplay.
I cannot really see how this works, but
an anagram of 'not' is 'tno' which is within the answer.
'havana?' could be 'cigar' (I've seen this before) and 'cigar' is found in the answer.
This may be the basis of clue (or it may be nonsense).
(Other definitions for close but no cigar that I've seen before include "It's not quite good enough", "Very nearly" and "not good enough for Havana?".)