Question: What football position did the manager of Tianjin Quanjian previously hold?

Context articles: Tianjin Quanjian F.C.
Haihe Educational Football Stadium
Zhang Lu (goalkeeper)
Li Xingcan
2002–03 Parma A.C. season
Axel Witsel
Fabio Cannavaro
Quanjian Group
2017 Tianjin Quanjian F.C. season
Tianjin Tuanbo Football Stadium

Tianjin Quanjian F.C. () is a professional Chinese football club that currently participates in the Chinese Super League division under licence from the Chinese Football Association (CFA).
 The team is based in Tianjin and their home stadium is the Haihe Educational Football Stadium that has a seating capacity of 30,000.
 Their current owners are Quanjian Nature Medicine who officially took over the club on 7 July 2015.
Tianjin Haihe Education Park Stadium is a multi-purpose stadium in Tianjin, China.
 It is currently used mostly for football matches of Tianjin Quanjian.
 They drew the highest average home attendance in the 2016 China League One (12,165), followed by Guizhou Hengfeng Zhicheng (11,089), Dalian Yifang (10,806) and Shenzhen FC (10,152).
 The stadium opened in 2011.
Zhang Lu (; born 6 September 1987 in Tianjin) is a Chinese footballer who currently plays for Tianjin Quanjian in the Chinese Super League.
Li Xingcan (Chinese: 李星灿; born 23 July 1987 in Tianjin) is a Chinese football player who currently plays for Chinese Super League side Tianjin Quanjian.
Parma Associazione Calcio regained its respect following a lacklustre Serie A and Champions League performance the year before.
 Under new coach Cesare Prandelli, Parma played an offensive 4–3–3 formation, in which new offensive signings Adrian Mutu and Adriano starred.
 Both made up for the departure of Marco Di Vaio to Juventus.
 Mutu scored 18 goals from the left wing, and Parma accepted a multimillion-pound offer from Chelsea in the summer, which meant the Romanian international only spent a year at the club.
 Also impressing were goalkeeper Sébastien Frey and young centre-halves Matteo Ferrari and Daniele Bonera, who proved to be acceptable replacements for departed captain Fabio Cannavaro, who had joined Inter in late August 2002.
Axel Laurent Angel Lambert Witsel (born 12 January 1989) is a Belgian professional footballer who plays for Chinese club Tianjin Quanjian.
 During his play for the Belgium national team, he came into the first team as a right-winger, and can also play attacking midfielder, though his natural position is as a central midfielder.
Fabio Cannavaro, (] ; born 13 September 1973) is an Italian former professional footballer and current manager of Chinese club Tianjin Quanjian.
Quanjian Group Co., Ltd. () is a Chinese herbal medicine company based in Tianjin.
 The group is the parent company of Quanjian Nature Medicine Technology Development Co., Ltd. () for about 75.36% stake.
 Quanjian Group is the parent company of Dalian Quanjian F.C., which the group owned 80% stake of the women football club.
Tianjin Quanjian F.C. is a professional Chinese football club that currently participates in the Chinese Super League division under licence from the Chinese Football Association (CFA).
 The team is based in Tianjin and their home stadium is the Haihe Educational Football Stadium that has a seating capacity of 30,000.
 Their current owners are Quanjian Nature Medicine who officially took over the club on 7 July 2015.
Tianjin Tuanbo Football Stadium is a professional football stadium in Tianjin, China.
 It hosts the home matches of Tianjin Quanjian F.C. of the China League One.
 The stadium holds 22,320 spectators and opened in 2012.