In the morning I go to see chum (5)
I believe the answer is:
amigo
'chum' is the definition.
(thesaurus)
'in the morning i go' is the wordplay.
'in the morning' becomes 'am' (AM on a clock).
'am'+'i'+'go'='AMIGO'
'to see' acts as a link.
(Other definitions for amigo that I've seen before include "friend from Barcelona" , "Male (Spanish?) friend" , "buddy abroad?" , "friend in Uruguay" , "China (in Spain's view)" .)