Massimo Donati has left Celtic and signed for Serie A side Bari.
The midfielder has returned to Italy after two years with the Glasgow giants.
He had spoken publicly of his desire to quit Celtic last season following a frustrating spell under Gordon Strachan.
But, despite being more involved in the first team since the arrival of Tony Mowbray this summer, the 28-year-old says his decision to return home was for family reasons.
"I asked Celtic for the chance to return to Italy and I am very grateful for granting me that wish,'' Donati told Celtic's website. "The new manager at Celtic trusted me and respected me but my desire to return to Italy was too strong.
"I'll miss playing in Scotland. The league is more physical and the Italian league is obviously more technical.
"But what I will miss most of all is the fantastic supporters and the atmosphere they create at games. We can learn a lot from them in Italy.''
Donati joined Celtic in June 2007 from AC Milan and made 54 appearances for the Hoops, scoring four goals during his time in the east end of Glasgow.