The departure of Chris Hughton from Newcastle today has immediately given way to speculation over who will succeed him in the St James' Park hotseat.
Here, Press Association Sport takes a look at some of the leading contenders to take over on Tyneside.
Would be a popular appointment with the Geordie nation despite being a Sunderland fan as a boy. Has plenty of experience having managed four different clubs in England as well as Scottish giants Celtic.
He led Leicester to two League Cup triumphs and Celtic to three SPL titles, three Scottish Cups, and a League Cup. O'Neill also guided the Parkhead club to the final of the 2003 UEFA Cup. Took over at Aston Villa in 2006 and had a mixed spell before resigning in August.
The club's record goalscorer, Shearer was jetted in to save the club from relegation towards the end of the 2008/09 campaign but failed as the Tynesiders went down on the final day of the season. Shearer's side took just five points from a possible 24 and his short-term deal was not extended as Hughton was handed the job.
Currently out of work after being sacked by Southampton in August. Pardew has top-flight experience with West Ham and Charlton but was dumped by the former and left the latter, in November 2008, by mutual consent. Impressed at Southampton, leading the club to Johnstone's Paint Trophy glory and a League One play-off challenge last season despite the Saints starting with a 10-point deduction.
A hugely controversial figure, Kinnear was a surprise appointment by owner Mike Ashley in September 2008 having been out of work for four years. Appointed initially on a short-term deal, he carried on until February 2009 when he underwent a heart bypass operation with Hughton and then Shearer brought in as his replacements. Had an awful relationship with the press and was disliked by the supporters.
Former Newcastle midfielder Clark has impressed in his first job with League One side Huddersfield. Would jump at the chance to manage his boyhood favourites but a lack of experience at the highest level may count against him.