Question: How many days after taking over as Manchester's City manager did the former football player and jead coach of Jamshedpur FC resign?

Context articles: George Graham (footballer)
Graham Arnold
1997–98 Manchester City F.C. season
Ashim Biswas
Gary Roberts (footballer, born 1960)
Oleksandr Funderat
Steve Coppell
Xu Hong
Yumnam Raju
Răzvan Lucescu

George Graham (born 30 November 1944) is a Scottish former football player and manager.
 He made 455 appearances in the Football League as a midfielder or forward for Aston Villa, Chelsea, Arsenal, Manchester United, Portsmouth and Crystal Palace.
 Approximately half of his total appearances were for Arsenal and he was part of the side that won the Football League Championship and FA Cup "double" in 1971.
 Graham also made 17 appearances for California Surf in 1978.
 He then moved to the coaching staff at Crystal Palace, before joining former Palace manager Terry Venables as a coach at Queens Park Rangers.
 As a manager, he won numerous domestic and European honours with Arsenal between 1987 and 1995, and he also managed Millwall, Leeds United and Tottenham Hotspur.
Graham James Arnold (born 3 August 1963 in Sydney, New South Wales) is a former football (soccer) player, manager of A-League club Sydney FC.
 Arnold was appointed to work as an assistant coach of the Australian national football team in 2000.
 After head coach Frank Farina was sacked in 2005, Arnold worked with Guus Hiddink for the 2006 FIFA World Cup campaign, in which they made the second round of the finals.
 After Hiddink left, he became acting coach of the Socceroos.
 Arnold went on take the manager role at A-League club the Central Coast Mariners between 2010 and 2013, where he guided the club to two premierships and a championship.
 He is a member of the Football Federation Australia Football Hall of Fame.
 He has now also won with Sydney FC in 2016-2017 season in the a league.
The 1997–98 season was Manchester City's second in the First Division following relegation from the Premier League in 1995–96.
 The 1996–97 season had been a turbulent one; Five different managers took charge of the team over the course of the season (three permanent appointments and two caretakers), including Steve Coppell, who resigned after just 32 days as manager.
 Frank Clark became manager in December 1996 and was in charge for the start of the 1997-98 season.
Ashim Biswas (born on 20 December 1983) is an Indian football player.
 He is currently playing for Jamshedpur FC in the Indian Super League as a striker.
Gary Paul Michael Roberts (born 5 April 1960 in Rhyl) is a Welsh professional former football forward and winger.
 As a player, he is best remembered for his six years in the Football League with Brentford, for whom he made over 220 appearances.
 After retiring from football Roberts turned to management, managing non-league clubs Baldock Town and St Albans City before being appointed Cambridge City manager in 2003, remaining in the role until 2016.
Oleksandr Funderat (born 24 November 1972 in Ukraine) is a Ukrainian former football player and current manager of FC Shakhtar-3 Donetsk.
 After his playing career at FC Zvyezda in Kirovograd, Ukraine, he went on to become a coaching teacher at the Zvyezda Youth Sports School.
 Two years later, in 1994, Funderat became a coaching teacher at the Sports Lyceum in Kirovograd.
 After a short two year stint, he moved on to become a teacher of Sports and Pedagogy at the Kirovograd State Pedagogical University.
 In 2000, he became the FC Shakhtar-3 Donetsk coach, a position he still holds today.
Stephen James Coppell (born 9 July 1955) is an English football coach and former player, who is the head coach of the Jamshedpur FC in the Indian Super League.
Xu Hong (; born May 14, 1968 in Liaoning) is a retired Chinese football player and football manager.
 He was most recently the manager of Chinese Super League team Dalian Aerbin F.C. for 63 days before he had to resign on February 19, 2013 because it was discovered by the Chinese Football Association that he manipulated a match while as a manager at Sichuan Guancheng and was given a 5-year suspension from all football activity.
Yumnam Raju Mangang (born 3 July 1989 in Manipur) is an Indian football player who plays as a Left back for Indian Super League club Jamshedpur FC.
Răzvan Lucescu (] ; born 17 February 1969) is a Romanian professional football head coach and former football player.
 He is the current manager of the Greek club PAOK FC.
 He is the son of former football player and current manager Mircea Lucescu.