Woolgatherer (10)
I believe the answer is:
daydreamer
'woolgatherer' is the definition.
(synonyms)
This is all the clue.
(Other definitions for daydreamer that I've seen before include "One distracted from the present" , "one in a brown study" , "Fantasist" , "one has unrealistic expectations" , "One letting their mind wander" .)