Requests have Neddy taking in first kid (4)
I believe the answer is:
asks
'requests' is the definition.
('ask' can be a synonym of 'request')
'neddy taking in first kid' is the wordplay.
'neddy' becomes 'ass' (I can't justify this - if you can you should give a lot more credence to this answer).
'taking in' means one lot of letters goes inside another.
'first kid' becomes 'k' (ast letter of 'kid').
'ass' placed around 'k' is 'ASKS'.
'have' is the link.
Can you help me to learn more?
(Other definitions for asks that I've seen before include "Solicits" , "Demands (something of someone)" , "Puts a query" , "Inquiries" , "Poses a question" .)