He could be in Madrid and Paris at the same time (8)
I believe the answer is:
spaniard
'he could be' is the definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.
'madrid and paris at the same time' is the wordplay.
'and paris' can be anagrammed to 'SPANIARD'.
But, I'm not clear how this is indicated.
'in' is the link.
Can you help me to learn more?
(Other definitions for spaniard that I've seen before include "Person from Eurozone" , "Eg, a native of Madrid" , "Nadal perhaps" , "Malaga man or woman, perhaps?" , "European national" .)