Neil Lennon has tried to address many of the questions supporters were asking about the squad.
There have been two strikers added and a centre-half, as well as a goalkeeper who will provide a bit of back-up. Although it is difficult to judge until you see them play, the additions certainly look to have bolstered the pool.
Miku is a guy who comes with some pedigree, given that he has scored goals in La Liga, arguably the toughest league in the world. He is also an established international and I'm certain the sway of Champions League football would have had a huge bearing on his decision to move to Glasgow.
It's a win-win for all parties, there is no better stage to play your football and show what you've got than the Champions League. If the lad does well it is to his own and to Celtic's benefit.
And, if Lennon's men can get back into the Champions League group stage again next season there is a chance they'll be in a position to afford to keep him – and that he wants to stay.
It goes without saying that the Champions League and the prestige it brings adds a real level of excitement to the season for everyone.
Players know they are being tested at the highest level and can judge themselves and be judged against the very best.
Efe Ambrose is another you would expect to see become a regular and, again, by all accounts, he is the commanding figure that Celtic have been looking to have in the heart of defence, although he also has a level of versatility which Lennon will welcome.
The financial bounty from being involved in the tournament helps Celtic afford these players, but there's a danger that the sums involved make you overlook the fact that it's simply a thrilling tournament to be a part of.
For supporters, for players and for the manager, when you hear that Champions League music at the ground and you feel the charge in the stadium, it would be difficult to put a price on what it means to be there.
But, equally, there is no doubt that the money generated from Celtic's involvement is a massive, massive boost.
It isn't just that Neil Lennon was then able to go and add a few players to his squad, it is also about the added benefit of being able to keep the best players that you've got and really build a side.
Gary Hooper and Victor Wanyama are in line for new contracts and one of the big factors about getting into Champions League is the lift in stature to the club.
Celtic have made it their recent signing policy to bring in players who are young, hungry and who have a sell-on value and it is a structure which has worked well for them. After all, they brought £6million in with the sale of Ki Sung-Yueng this summer and the lad wasn't what you would call an out-and-out regular in the Celtic midfield.
While that is a sound business plan, for stability you also want to be able to maintain the spine of a side and build a team. Having finances in place means you are able to resist offers, or, at least sell at your own price and not someone else's.
You would have to say that you would expect Celtic to win the league relatively easily for the next few seasons, given that Rangers are out of the picture.
If that proves to be the case, they have the chance to get into the Champions League group stage and build a very solid base for the club moving forward.