Juventus are not directly involved in the scandal, but several of their staff are.
Stellini was with manager Antonio Conte at Siena, and both are facing charges relating to their time at the club whilst in Serie B.
“The events of the last month have deeply affected me. In a short space of time I went from member of the technical staff of the champions of Italy to a cause of turmoil for those I worked with,” said Stellini.
“Whatever the evolution of the legal situation I am in, I feel it is only right to show a professional attitude and release this weight from Juventus which fell on to the club’s shoulders due to my time elsewhere in my career.
“I think it is right to dedicate all my time and efforts to clearing my position in these matters, which are exclusively about me and not those I simply shared a locker room with.
“I therefore tend my irrevocable resignation as technical assistant at Juventus.”
