In a stunning turn of events, Brendan Rodgers has resigned from his position as manager of Celtic Football Club, effective immediately. The club confirmed the departure on Monday, with former Celtic boss Martin O'Neill stepping in as interim manager, supported by former player Shaun Maloney.

The announcement comes after a difficult start to the season for the Scottish champions, who currently sit eight points behind early league leaders Hearts following a 3-1 defeat on Sunday. Rodgers' exit marks the end of his second spell at Celtic Park, a period that has been marked by considerable success.

Celtic released a statement expressing their appreciation for Rodgers' contributions during his tenure. "The Club appreciates Brendan's contribution to Celtic during his two very successful periods at the Club," the statement read. "Brendan leaves Celtic with our thanks for the role he has played during a period of continued success for the Club and we wish him further success in the future". The club also stated that the process to appoint a new permanent manager is underway and that supporters will be updated as soon as possible.

Martin O'Neill's return to Celtic Park is a welcome one for many fans. O'Neill, who previously managed the club from 2000 to 2005, is fondly remembered for leading Celtic to a period of domestic dominance and European success, including a treble win. His knowledge of the club and Scottish football will be invaluable as he takes the reins on an interim basis.

Shaun Maloney, a former Celtic player, will assist O'Neill during this transitional period. Maloney's understanding of the club's culture and his coaching experience will provide further support as Celtic look to steady the ship.

Interestingly, hours before being announced as interim manager, O'Neill publicly backed Hearts to win the Premiership title, citing their physical strength and Celtic's perceived weakness in that area. "Celtic at this minute are not physically strong, and can actually lose games, unlike before when they looked invincible," O'Neill said. "Rangers are no threat whatsoever. This is the moment, this is the time now for Hearts".

Rodgers' departure is said to stem from growing frustrations with the club's hierarchy and a perceived lack of investment in the squad. Despite his success in delivering trophies, Rodgers reportedly felt that his position had become untenable. The 52-year-old leaves Celtic having secured four league titles, among other honors, across his two spells.

Celtic face Falkirk on Wednesday night, marking O'Neill and Maloney's first game in charge. The interim management team will be focused on getting the team back on track and closing the gap on Hearts at the top of the Scottish Premiership. The Celtic board will now begin the search for a permanent replacement for Rodgers, with several names likely to be linked with the high-profile position.