Brazilian midfielder Anderson has completed his move from Manchester United to Fiorentina, according to the Manchester Evening News.
The 25-year-old, who arrived at Old Trafford from Porto in 2007 for a reported fee of £17m, made just four Premier League appearances under David Moyes.
Former United boss Sir Alex Ferguson converted Anderson from a dynamic attacking midfielder into a holding player - with mixed results - but a combination of injuries and poor form meant he failed to live up to expectations during his six-and-a-half year spell at Old Trafford.
Nevertheless, the Brazilian still leaves the Premier League having won four Premier League titles, two League Cups, one Champions League and a FIFA Club World Cup.
The 2008 Golden Boy Award winner's standout moment as a Manchester United player came in the 2008 Champions League final, when he converted one of the penalties in the shoot-out against Chelsea.
Anderson made 179 appearances for the Red Devils in total, scoring nine goals.