My white walls are roughly textured, so I decided to play along with that. Instead of lighting it to make the wall disappear into a uniform white, I tried to get a beautiful shadow.
I illuminated Francesco S. with a large rectangular softbox, vertically oriented, placed in front of him at about 1.5 m. Also, I pointed two simple parabolic reflectors, underpowered, towards to ceiling.
The camera used was a Fujifilm X-T1 with its XF35mm f/1.4 lens @ f/9.0.
Fujifilm on Amazon