While football fans from across the globe have been enthralled at the race for the ultimate accolade, the new Celtic manager has been trawling through the record books, the DVDs and the stats sheets.
He has missed quite a World Cup so far, but his hard work and dedication to the Celtic cause will hopefully pay off.
The Hoops squad will report for pre-season training at Lennoxtown today and will get their first insight into the new man at the helm.
Deila has left no stone unturned since being appointed Neil Lennon's successor and now has his first hurdle to overcome with the Champions League qualifier against KR Reykjavik looming large on the horizon for Celtic.
The finest names in the game have their eyes on the biggest prize, but Deila won't avert his own gaze.
"I haven't seen so much but what I've seen has been positive, with a lot of goals," the Celtic boss said. "I think this World Cup is very good.
"The levels between countries is becoming more and more similar.
"Everybody can beat everybody else. That's something we have to think about when we meet Reykjavik.
"There's nothing going to be given to us, we have to be 100% focused, 100% prepared. If we do that we have a very good chance. But if you are 10% down - trouble. I won't talk so much about that particular game. For me, it's what you do every day.
"If you give 100% every day you'll give 100% in every match as well. If you're giving 90 on Tuesday, 100 on Thursday, 70 on Friday then the match day will be the same. So it's about attitude, being prepared, 100 % focus when we train."
Deila certainly hasn't failed to prepare and he is not prepared to fail as the first day of a new era arrives at Celtic.
The 38-year-old has already spoken to some of his players, including captain Scott Brown, but it is the first session of the summer that will set the tone for the rest of the campaign.
And he is determined to get off to a flying start as he and new assistant John Collins get set to put the squad through their paces this week.
Deila said: "It's important to get settled and tell players how things are going to be. That's what we will do first and then we can start working.
"Then the exercises will not be high intensity because we have been away a long time. We will get to know each other and take it from there.
"I don't think we will change much - but some things will be different. Maybe we will meet up a little bit earlier so we can plan things before training.
"We will talk about what the training will consist of so we all have an idea of what we will focus on when we are on the pitch.
"Everything is about training. You train as you play. If you have good preparations then the players will develop.
"The staff will work hard to make it as short and simple as possible so players can use energy on the pitch.
"The players have to feel that I can trust them and they must also have fun. If they do that then things will happen - I know it."
The Celtic squad may not know much about their new boss, but Deila already has the low-down on the group of players Lennon has left behind.
He has inherited a side that has just won a third successive title and will make it four-in-a-row this term.
The initial meeting between the two parties will be a serene affair, but Deila is eager to get down to business.
He said: "I've seen some things, got a good view of the team. I haven't seen so much, but I've seen all the stats, there's a very good analysis centre here. I've seen every goal chance, every goal scored and conceded - I know all that.
"I worked a lot to get to know everything about the staff, getting everything right so everybody knows their responsibilities. I want us to be a good team all working in the same direction.
"If that's good then I can start working with the players. Today I will meet with everybody surrounding the players and tomorrow I'll do the same with the players.
"Then on Wednesday we can start working on what's most important - what's happening on the pitch."
It is only a matter of days before Deila will take a seat in the dugout as Celtic boss for the first time, with a pre-season trip to Austria the precursor to their Champions League qualifier with KR.
He is relatively inexperienced in the European arena but, having battled the mighty Atletico Madrid while at Stromsgodset, he is excited at the prospect of a crack at Europe's premier club competition.
Deila said: "That was my biggest moment in football ever - that was when we went to the Vicente Calderon Stadium and lost only 2-1.
"We played a fantastic game. I have played in cup finals, but for me that international stage against a good team when we played well gave me a very good feeling. I hope that I will get many feelings like that at Celtic - that's why I came here.
"I looked at the Barcelona game and, although Celtic didn't win, the atmosphere was unbelievable and that's why you are in football.
"You want to win trophies, but the moments at matches when you experience good things with fans and players is also special."