The Bhoys announced on Wednesday that manager Ronny Deila is leaving the club this summer, with the Norwegian lasting just two years in Glasgow.
Deila won the Scottish Premiership and Scottish League Cup last season, but has struggled this term, seeing his side crash out of the Champions League and Europa League before 2015 was even over.
Further exits in the Scottish League Cup and Scottish Cup - the latter of which came against Old Firm rivals Rangers on Sunday - have all led to Deila's imminent departure, with the attention now turning towards who could replace him this summer.
Now, The Mirror report that Celtic are considering a shock move to bring former midfielder Paul Lambert back to the club as their new manager, with the Scot currently disillusioned with life at Blackburn Rovers.
Lambert, 46, racked up 273 appearances and 19 goals for Celtic during his playing career, and was something of a hero during an almost eight-year stay at Celtic Park.
Now unhappy with the direction at Blackburn, Lambert could look to leave Ewood Park this summer, and a move back to Celtic Park could be on the cards for the former Norwich City boss, who is looking to rebuild his career as a manager having struggled at Aston Villa.
Would you like to see Lambert become Celtic manager?