Crazy Dean! You made Cameroon City! (7)
I believe the answer is:
yaounde
'cameroon city' is the definition.
'Yaounde' can be an answer for 'city' (Yaounde is an example). I am unsure of the 'cameroon' bit.
'crazy dean you' is the wordplay.
'crazy' is an anagram indicator.
'dean'+'you'='deanyou'
'deanyou' with letters rearranged gives 'YAOUNDE'.
'made' is the link.
Can you help me to learn more?
(Other definitions for yaounde that I've seen before include "African capital" , "Republic of Cameroon capital" .)