One offering account from row thirteen, possibly: a person getting on? (4,7)
I believe the answer is:
bank manager
'one offering account from row thirteen' is the definition.
The definition suggests a singular noun which matches the answer.
'a person getting on?' is the wordplay.
I cannot really see how this works, but
'a' could be 'an' and 'an' is located in the answer.
'person' could be 'manager' (manager is a kind of person) and 'manager' is present in the answer.
This may be the basis of the clue (or it may be nonsense).
'possibly' is the link.
Can you help me to learn more?
(Other definitions for bank manager that I've seen before include "Head of financial organisation" , "Person once in charge of a Barclays or NatWest branch, say" , "Finance official (to whom one once might have grovelled?)" , "head of branch" , "Capt. Mainwaring's civilian job" .)