Norwegian Ronny Deila has been appointed manager of Scottish champions Celtic on a 12-month rolling contract, the club announced on Friday.
The 38-year-old former defender takes over from Neil Lennon, who left the Scottish champions two weeks ago after four years in charge.
"I will treasure this opportunity and will give everything I have to achieve success for Celtic and our wonderful fans," Deila said, who guided Stromsgodset to their first title in 43 years last season and won the Norwegian Cup in 2010.
"Celtic is in great shape and the club has enjoyed real success in recent years due to the hard work of Neil and his team. I want to carry on this work and continue to bring happy times to Celtic. I can't wait to get started on this journey."
Celtic chief executive Peter Lawwell was confident Deila would enjoy success with the Glasgow giants.
"Knowing that he was so highly rated across Europe, Ronny was one of the first candidates we considered as manager and having discussed the opportunity with him at length, we are convinced he has the talent and the determination to deliver very positive results for the club and our supporters," Lawwell said.
"Ronny likes to play attacking, winning football, the Celtic way, something I know our supporters will endorse. As the new season begins, I am sure our fans will get right behind Ronny and the players once again as we aim to bring success to Celtic and continue to deliver a club they can be proud of."