Background: Alan Shearer, CBE, DL (; born 13 August 1970) is an English retired footballer. He played as a striker in the top level of English league football for Southampton, Blackburn Rovers, Newcastle United and the England national team. He is Newcastle's and the Premier League's record goalscorer.
Context: In a surprise move, late on 1 April 2009, it was announced that Shearer would become the manager of his former club Newcastle United for the remaining eight games of the season, taking over from head coach Chris Hughton who was in temporary charge while the permanent manager Joe Kinnear recovered from heart surgery, having taken ill on 7 February. Shearer stated "It's a club I love and I don't want them to go down. I'll do everything I can to stop that."  Shearer was unveiled at a press conference the following day by club managing director Derek Llambias. In explaining his acceptance of a managerial role at Newcastle at this time, Shearer stated that he would not have done this for any other club in this position, including his two other previous Premier League clubs. Amid persistent questioning regarding the permanency of the appointment, Llambias announced that Shearer was to be manager for the remaining eight games, and after his recovery, Joe Kinnear would return as manager after the end of the season. Shearer confirmed that the BBC had agreed to giving him an 8-week sabbatical from his Match of the Day role. Llambias also confirmed Dennis Wise had left his executive role at the club and the club had no plans to appoint a replacement, with Shearer stating that "the people that have moved, were moving on anyways, that had nothing to do with me". Wise's presence had previously been speculated as being a blockage to any possible appointment of a manager. Shearer accepted the surprise offer on the Monday on the condition that he could bring in Iain Dowie as his assistant. Shearer also brought in Paul Ferris to oversee club medical, physio and dietary matters. Ferris had previously worked with Shearer in his playing days, and had been at the club for 13 years prior to an earlier departure under then manager Glenn Roeder.  His first match in charge ended in a 2-0 defeat against Chelsea at St James' Park. On 11 April, Newcastle earned their first point under Shearer with a 1-1 draw with Stoke City at the Britannia Stadium with Andy Carroll scoring a late equalising goal. After a defeat to Tottenham Hotspur and a draw against Portsmouth, his first win for Newcastle came in a 3-1 victory over Middlesbrough that lifted Newcastle from the relegation zone.  On the eve of the final day of the season on 24 May, where all fixtures are played simultaneously, Newcastle faced the prospect of being relegated to the Championship, along with Hull City, Middlesbrough and Sunderland, which would end their 16-year unbroken spell in the Premier League. After losing 1-0 at Aston Villa with Damien Duff scoring an own goal, Newcastle were relegated with local rivals Middlesbrough, joining West Bromwich Albion whose relegation had been confirmed in previous weeks, while Sunderland and Hull City survived. Shearer's eight games yielded only five points out of a possible twenty-four.  Shearer did not get the manager's job on permanent basis. Chris Hughton stepped up from the coaching staff to take charge of the quest to get Newcastle back into the Premier League, which was achieved at the first attempt as Newcastle finished top of the Championship in the 2009-10 season.
Question: During what years was he the manager?. Whats the answer?
remaining eight games of the season,