Glaswegian’s rejection of celebrity losing millions (3)
I believe the answer is:
nae
'glaswegian's rejection' is the definition.
('no' in Scottish dialect)
'celebrity losing millions' is the wordplay.
'celebrity' becomes 'name' (as in a 'big name').
'losing' is a deletion indicator.
'millions' becomes 'm' (abbreviation).
'name' with 'm' removed is 'NAE'.
'of' acts as a link.
(Other definitions for nae that I've seen before include "Scottish negative" , "Scots form of no" .)