Deepak said to Nitin, " That boy playing with the football is the younger of the two brothers of the daughter of my father's wife". How is the boy playing football related to Deepak ?

Explanation

Younger of the two brothers of the daougher of my father is wife (Since my father.s wife = my mother)
`rArr` Younger of the two brothers of the doughter of my mother.
(Since dougther of my mother = my sister)
`rArr` Younger of the two brothers of my sister
`rArr` my younger brother.