Rob arranges to have two sons twinned (10)
I believe the answer is:
dispossess
'rob' is the definition.
(thesaurus)
'arranges to have two sons twinned' is the wordplay.
I cannot really see how this works, but
'have' could be 'possess' (possessing is a kind of having) and 'possess' is present in the answer.
'sons' could be 's' and 's' is found in the answer.
The remaining letters 'di' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for dispossess that I've seen before include "Deprive (someone) of land/property" , "Expel" , "Drive out l" , "Deprive of land and property" .)