Question: Who announced his retirement after the former Italian professional footballer born in 1973 became the new manager?

Context paragraphs:
Benito Carbone: Benito "Benny" Carbone (born 14 August 1971) is a former Italian professional footballer and most recently manager of Ternana.  He played as a forward, winger or midfielder.

Massimo Ambrosini: Massimo Ambrosini (born 29 May 1977 in Pesaro, Marche) is a former Italian professional footballer, who mainly played as a defensive midfielder.  At club level, he is mostly known for his successful time at Italian team A.C. Milan, where he spent eighteen years of his career, winning several titles, and even captained the side from 2009 to 2013, following the retirement of Paolo Maldini.  Ambrosini retired from professional football in 2014, after a season with Fiorentina.  At international level, he represented Italy at the 2000 Summer Olympics, and in two UEFA European Championships, winning a runners-up medal at UEFA Euro 2000.

Fabio Cannavaro: Fabio Cannavaro, (] ; born 13 September 1973) is an Italian former professional footballer and current manager of Chinese club Tianjin Quanjian.

Paolo Rossi: Paolo Rossi (] ; born 23 September 1956) is a former Italian professional footballer, who played as a forward.  In 1982, he led Italy to the 1982 FIFA World Cup title, scoring six goals to win the Golden Boot as top goalscorer, and the Golden Ball for the player of the tournament.  Rossi is one of only three players to have won all three awards at a World Cup, along with Garrincha in 1962, and Mario Kempes in 1978.  Rossi was also awarded the 1982 Ballon d'Or as the European Footballer of the Year for his performances.  Along with Roberto Baggio and Christian Vieri, he is Italy's top scorer in World Cup history, with 9 goals in total.

Vincenzo Iaquinta: Vincenzo Iaquinta (] ; born 21 November 1979) is a former Italian footballer who played as a striker.  Prior to joining Juventus in 2007, he initially played for several smaller Italian clubs, and subsequently moved to Udinese in 2000, where he spent seven seasons, representing the club in the UEFA Champions League.  After failing to make an appearance under new manager Antonio Conte during the first half of the 2011–12 season, in January 2012, he was sent on a half-season loan to Cesena; he returned to Juventus the following season, but once again made no appearances due to injury as the club won the league title; he subsequently retired from football in 2013.

Massimo Briaschi: Massimo Briaschi (born 12 May 1958) is a former Italian professional footballer and FIFA sports agent.  Throughout his career he played as a forward.  A hard-working and versatile player, he was capable of playing both as a striker and on the wing.  He is mostly remembered for his time with Juventus, where he won several honours.  His younger brother, Alberto, was also a footballer.

2015 Guangzhou Evergrande Taobao F.C. season: The 2015 Guangzhou Evergrande Taobao season is the 62nd year in Guangzhou Evergrande's existence and is its 48th season in the Chinese football league, also its 26th season in the top flight.  The club's name was changed from Guangzhou Evergrande F.C. to Guangzhou Evergrande Taobao F.C. before the 2015 season due to e-commerce company Alibaba Group purchasing a 50% stake in the club from the Evergrande Real Estate Group.  Fabio Cannavaro was appointed as the new manager of the club after Marcello Lippi announced his retirement at the end of 2014 season.  On 4 June 2015, Brazilian football manager Luiz Felipe Scolari was appointed as the new manager of club, signing a two-and-a-half-year deal.

Orazio Russo: Orazio Russo (born 6 October 1973) is a former Italian professional football (soccer) player.  He spent most of his career playing for Sicilian giants Calcio Catania and announced his retirement on May 15, 2010.  Strange as it may seem, Russo played an important role in most of Peder Knudtzon's Championship Manager teams.

Antonio Marasco: Antonio Marasco (born 19 February 1970) is a former Italian professional footballer.  Since 2007, he played as a midfielder in Serie D, the 5th highest level in Italian football and the level right below the professional league.

Renato Zaccarelli: Renato Zaccarelli (born 18 January 1951) is a former Italian professional footballer and manager who played as a midfielder.

Supporting paragraphs: 2015 Guangzhou Evergrande Taobao F.C. season Fabio Cannavaro
Answer: Marcello Lippi