Money manager and lover eat in (9)
I believe the answer is:
financier
'money manager' is the definition.
(I've seen this before)
'lover eat in' is the wordplay.
'lover' becomes 'fancier' (fancier is a kind of lover).
'eat' indicates putting letters inside.
'fancier' enclosing 'in' is 'FINANCIER'.
'and' acts as a link.
(Other definitions for financier that I've seen before include "Manager of large-scale monetary resources" , "One dealing in big money" , "One handling money" , "Gnome" , "Businessman" .)