Choose to put up around centre of Newport (3)
I believe the answer is:
opt
'choose' is the definition.
(thesaurus)
'to put up around centre of newport' is the wordplay.
'put up' says the letters should be written backwards.
'around' indicates putting letters inside.
'centre of' says to take the centre.
The middle letter of 'newport' is 'p'.
'to' back-to-front is 'ot'.
'ot' enclosing 'p' is 'OPT'.
(Other definitions for opt that I've seen before include "Plump for" , "Have preference for something" , "Choose from pot" , "Hold in the highest esteem" , "Make a choice" .)