Treasurer barely sees shapes in the sky? (4)
I believe the answer is:
ursa
'shapes in the sky?' is the definition.
(the constellations Ursa Major and Ursa Minor)
'treasurer barely' is the wordplay.
'treasurer' becomes 'bursar' (someone in charge of money).
'barely' says to take the centre (the word is bare of its external letters).
The middle letters of 'bursar' are 'URSA'.
'sees' is the link.
(Other definitions for ursa that I've seen before include "(In the sky) Major or Minor" , "(& 19 across) Plough constellation" , "The Major one is the Plough" , "'Major and Minor, constellations (4)'" , "It's both major anf minor overhead" .)