Crystal Palace have officially announced the sacking of Pierre Sage after just four months in charge.As talkSPORT reported on Sunday, the Frenchman departs Selhurst Park with Sunday’s 3-1 home defeat to Liverpool proving to be his final game in charge.Sage was only appointed on a three-year deal in JulyGettyEx-Brentford and Tottenham manager Thomas Frank is on a three-man shortlist to become the next Eagles boss.talkSPORT revealed Sage had been fighting to save his job following last month’s 5-0 derby mauling by Brighton.However, he remained in charge for six more matches in all competitions, winning just one.A seventh defeat in 10 Premier League outings proved to be the final match of his tenure and his exit was officially announced on Thursday.The club’s statement read: “Crystal Palace Football Club can confirm that Pierre Sage has left his role as Manager.“Three members of Pierre’s coaching staff – Jamal Alioui, Damien Della Santa and Sandy Guichard – have also left the club.“The club would like to place on record its thanks to Pierre and his staff for their efforts during their time in South London, and wish them well for the future.“An update on the process of appointing a new Manager will be provided in due course.”It is the second Premier League sacking of the day after Michael Carrick was dismissed by Manchester United after a similarly lengthy and drawn-out process.Sage’s departure comes after he was appointed on a three-year deal in the summer.Frank’s reputation in the game remains high despite his stint at Tottenham not working outGettyThe 47-year-old replaced Oliver Glasner in the dugout after winning the Coupe de France with Lens last season.However, he suffered a slow start in the Premier League as well as winning just one of Palace’s first four Europa League fixtures.Meanwhile, his most recent victory came against Fulham in the Carabao Cup fourth round on October 28.It marked Palace’s only win in their final eight matches under Sage, leaving the club rock bottom of the Premier League.talkSPORT understands he could be set for an immediate return to football with Lens on the lookout for a new boss, having sacked Sage’s replacement Yannick Cahuzac in recent days.Palace do not return to action until November 21, when they visit Coventry City.Palace chairman Steve Parish is now on the lookout for a successor to SageGettyWho could replace Sage at Crystal Palace?talkSPORT understands Frank is the early frontrunner having been interviewed in the summer after Glasner departed.The Dane is understood to be interested in taking over at Selhurst Park.