Bibliophile, say, not welcoming incomplete reader (9)
I believe the answer is:
collector
'bibliophile say not welcoming' is the definition.
I can't tell whether this definition defines the answer.
'incomplete reader' is the wordplay.
'incomplete' becomes 'col' (I can't explain this - if you can you should give a lot more credence to this answer).
'reader' becomes 'lector' (synonyms).
'col'+'lector'='COLLECTOR'
Can you help me to learn more?
(Other definitions for collector that I've seen before include "taxman?" , "Accumulator, gatherer" , "One acquiring items" , "One who likes to amass things" , "Specimen gatherer" .)