He subsequently transplanted to Oristano, where he has lived for years in the San Paolo-Torangius neighborhood.
Between the 80s and 90s he was also president of the FIGC of Oristano and regional councilor of the same Federation; president of the Ales football club and more recently of the main football team of Oristano, Tharros.
In 2000 he was elected president of the province of oristano with 56.50% of the preferences,[2] while in 2001 he also became regional councilor, taking over from Emilio Floris.
He was re-elected to the Regional Council of Sardinia in 2004 with 1,924 personal preferences.
[3] In 2013 Diana was arrested for unlawful use of funds to groups in the Regional Council,[4] while in 2018 he was sentenced to 5+1⁄2 years of imprisonment.