Mr West gets his vowels confused in this country (5)
I believe the answer is:
kenya
'his vowels confused in this country' is the definition.
'Kenya' can be an answer for 'country' (Kenya is an example). I am not sure about the remainder of the definition.
'mr west' is the wordplay.
'mr' becomes 'ken'.
'west' becomes 'ya' (I can't justify this - if you can you should give a lot more credence to this answer).
'ken'+'ya'='KENYA'
'gets' acts as a link.
(Other definitions for kenya that I've seen before include "Nairobi's country" , "Republic in East Africa" , "East African country" , "state?" , "E African country" .)