Pigeon lover welcoming home banker (9)
I believe the answer is:
financier
'banker' is the definition.
(I've seen this before)
'pigeon lover welcoming home' is the wordplay.
'pigeon lover' becomes 'fancier' (a pigeon fancier breeds pigeons).
'welcoming' indicates putting letters inside (in sense of 'inviting in').
'home' becomes 'in' ('he's home' can mean 'he's in').
'fancier' placed around 'in' is 'FINANCIER'.
(Other definitions for financier that I've seen before include "Manager of large-scale monetary resources" , "Money manager" , "One dealing in big money" , "I can infer (anag)" , "City man" .)