Go ahead with loan (7)
I believe the answer is:
advance
I believe this is a double definition.
'go ahead' is the first definition.
(thesaurus)
'loan' is the second definition.
(I've seen this before)
'with' is the link.
(Other definitions for advance that I've seen before include "Move forward to get loan?" , "Go ahead - make a loan" , "Promote" , "Move froward as army does" , "Put forward (a theory)" .)