The Bhoys secured the title without playing, when closest challengers Aberdeen lost 1-0 away to Dundee United on Saturday.
The result ensured no one could catch Celtic at the top of the table with three games remaining. But Collins believes the club’s manager Ronny Deila will already be looking ahead to future challenges.
“Ronny will enjoy this moment,” Collins said, “but being the type of guy he is, he’ll already be thinking about next season.
“We have to move on now and plan ahead. The next challenge is those big European games in July.”
Celtic will want to reach the Champions League proper, meaning they will have to hit the ground running when the qualifying matches start in the summer. With some of his current loan players potentially leaving and new additions almost certain, it will also be a time when the new-look side will begin to take shape.
Deila has proved himself in a short space of time at Celtic Park, securing a domestic double in his debut campaign. The trick now is to maintain that success, while also attempting to get further in Europe – proving Celtic are back where they should be once again.