De Napoli scored in an early appearance for Menzingen, in a 1–1 draw with SC Cham II on 21 August 2011. He also played in a 4–3 to FC Muotathal on 24 September and scored in Menzingen's 4–0 rout over FC Rotkreuz on 22 October. De Napoli scored twice in the space of three minutes in a 3–2 win over Kussnacht FC on 29 October 2011.Menzingen entzaubert Küssnacht! REGIOfussball.ch. 1.11.2011. Retrieved 27.12.2011. The forward played his first game after the winter break in a 2–0 win over SC Goldau II on 31 March 2012.Matchtelegramm: SC Menzingen 2:0 SC Goldau II SC Menzingen. 31 March 2012. Retrieved 6 April 2012. De Napoli then started against Menzingen's 4–1 IFV Cup win over FC Gunzwil on 12 April 2012, being substituted late on in the game.Matchtelegramm: SC Menzingen: FC Gunzwil 4-1 12 April 2012. Retrieved 17 April 2012.
