Brendan Rodgers has returned as Celtic manager four years after leaving to join Leicester City.
The Northern Irishman, who was sacked by Leicester last April, has agreed a three-year contract with the Scottish champions to replace Ange Postecoglou, who left for Tottenham this month.
“I am really delighted to return to Celtic and I am hugely excited by this great opportunity,” said Rodgers.
Talking to the club’s website, he added: “When I was given the privilege of being asked to join the club again, it was a very simple decision for me and my family.
“We have enjoyed some great times at Celtic before and this will be my goal again, to deliver good football, ensure we have a team we all love to watch and ultimately bring more success to our fans.
“Ange has done some brilliant work across the last two years and I will be doing all I can to maintain Celtic’s momentum as we face into all our domestic and European challenges.
“We have a hugely impressive and talented group of players and staff at the club, and I am really looking forward to meeting up with them all and then getting straight down to work.”