Boy is going to India in the morning (7)
I believe the answer is:
william
'boy' is the definition.
'is going to india in the morning' is the wordplay.
'is going to' becomes 'will' (John is going to eat/John will eat).
'india' becomes 'i' (phonetic alphabet: alpha, bravo, charlie etc.).
'in the morning' becomes 'am' (AM on a clock).
'will'+'i'+'am'='WILLIAM'
(Other definitions for william that I've seen before include "Prince Harry's brother" , "See 20" , "Norman conqueror" , "Shakespeare or Pitt, say" , "- - Wordsworth" .)