And has been confirmed in the national press by the club
His departure comes following the 1-0 defeat against Manchester United on Saturday that virtually sealed relegation back to the Championship.
Today's official confirmation that McNally is leaving Carrow Road follows a weekend of rumours and speculation after he appeared to announce he was going in an exchange with a fan on Twitter in the aftermath of Saturday's match.
That was later withdrawn but this morning the club have confirmed that Mr McNally has decided to leave.
He joined the club in 2009 and has overseen two promotions to the Premier League.
Some Norwich players are unimpressed by the recruitment work done by the club in the last few transfer windows, according to Sky sources inside the dressing room.