Senor! Is Beau injured in South American capital? (6,5)
I believe the answer is:
buenos aires
'south american capital?' is the definition.
(capital of Argentina)
'senor is beau injured' is the wordplay.
'injured' indicates an anagram.
'senor'+'is'+'beau'='senorisbeau'
'senorisbeau' with letters rearranged gives 'BUENOS AIRES'.
'in' acts as a link.
(Other definitions for buenos aires that I've seen before include "South American capital" , "South American captial" , "Capital of Argentina" , "Sabine roues (anag) -- Spanish-speaking city" , "Capital city -- uneasier sob (anag)" .)