Juventus were stripped of their 2004–05 and 2005–06 titles after it was revealed they were involved in a match-fixing scandal.
Juventus were relegated to Serie B and deducted 17 points by the Italian Football Federation (FIGC) for their involvement, prompting many of the club's major stars to move elsewhere.
After press speculation linking him to various clubs, including a move back to Arsenal, on 2 August 2006, Vieira officially signed a four-year deal with Inter Milan in a deal to be worth €9.5 million, less than half of the €20 million fee Juventus had paid just 12 months prior.
Vieira declared he wanted to continue to play at the highest level at the presentation conference, which is his reason to leave Juve.

On his Inter debut on 26 August, Vieira scored twice as the team won 4–3 against A.S. Roma in the 2006 Supercoppa Italiana at the San Siro.
He later won the 2006–07, 2007–08, and 2008–09 Serie A titles.
But due to injury, he failed to become a regular starter.
Olivier Dacourt, initially a backup player, became manager Roberto Mancini's first choice player in the 2006–07 season.
After the club signed Sulley Muntari and Thiago Motta, Vieira became of lesser and lesser importance in the team.

In response to extensive media speculation regarding a possible return by Vieira to his former club in 2009, Arsenal manager Arsène Wenger admitted that he would contemplate re-signing Vieira.
The move never happened, however, and Vieira remained at Inter.
On 6 January 2010, Vieira unusually played as starter against Chievo, which was his eighth league start of the season.
Before the match commenced, Inter had lost Esteban Cambiasso and Muntari due to injury, with Dejan Stanković and Motta suspended.
José Mourinho stated that Vieira had played his last game at Inter after the match.
Juventus were stripped of their 2004–05 and 2005–06 titles after it was revealed they were involved in a match-fixing scandal. Juventus were relegated to Serie B and deducted 17 points by the Italian Football Federation (FIGC) for their involvement, prompting many of the club's major stars to move elsewhere. After press speculation linking him to various clubs, including a move back to Arsenal, on 2 August 2006, Vieira officially signed a four-year deal with Inter Milan in a deal to be worth €9.5 million, less than half of the €20 million fee Juventus had paid just 12 months prior. Vieira declared he wanted to continue to play at the highest level at the presentation conference, which is his reason to leave Juve.
On his Inter debut on 26 August, Vieira scored twice as the team won 4–3 against A.S. Roma in the 2006 Supercoppa Italiana at the San Siro. He later won the 2006–07, 2007–08, and 2008–09 Serie A titles. But due to injury, he failed to become a regular starter. Olivier Dacourt, initially a backup player, became manager Roberto Mancini's first choice player in the 2006–07 season. After the club signed Sulley Muntari and Thiago Motta, Vieira became of lesser and lesser importance in the team.
In response to extensive media speculation regarding a possible return by Vieira to his former club in 2009, Arsenal manager Arsène Wenger admitted that he would contemplate re-signing Vieira. The move never happened, however, and Vieira remained at Inter. On 6 January 2010, Vieira unusually played as starter against Chievo, which was his eighth league start of the season. Before the match commenced, Inter had lost Esteban Cambiasso and Muntari due to injury, with Dejan Stanković and Motta suspended. José Mourinho stated that Vieira had played his last game at Inter after the match.
Patrick Vieira