Download and tell him to read following books. (Osho talks on Jesus)
Come Follow To You
http://www.oshorajneesh.com/download/osho-books/western_mystics/Come_Follow_To_You_Volume1.pdf
http://www.oshorajneesh.com/download/osho-books/western_mystics/Come_Follow_To_You_Volume2.pdf
http://www.oshorajneesh.com/download/osho-books/western_mystics/Come_Follow_To_You_Volume3.pdf
http://www.oshorajneesh.com/download/osho-books/western_mystics/Come_Follow_To_You_Volume4.pdf
I Say Unto You
http://www.oshorajneesh.com/download/osho-books/western_mystics/I_Say_Unto_You_Volume1.pdf
http://www.oshorajneesh.com/download/osho-books/western_mystics/I_Say_Unto_You_Volume2.pdf
The Mustard Seed
http://www.oshorajneesh.com/download/osho-books/western_mystics/The_Mustard_Seed_My_Most_Loved_Gospel_on_Jesus.pdf