The former Celtic midfielder said during the week that there was too much dead wood in the Bhoys squad.
Stark, who made over 60 appearances for Hoops, criticised Ronny Deila during the week, saying that there was no way Deila could keep every individual happy with a squad that was so large, and he called for the next manager to make sure he prunes the squad.
And Ronny Deila, who will leave Celtic at the end of the season, has accepted that Stark does have a point, and that he should have dealt with reducing squad numbers better.
“I totally agree but I also had that issue when I came in here.” Deila told the Telegraph. “There were too many players here at that time. When you don’t have a lot of money and you can’t get the ones you know are real quality, you have to take chances.
“In the end it has been unbalanced and that’s a challenge. We had a very good unit here last year up to Christmas, but after that we got stuck with too many players and that is my responsibility. There are things I should have done better.”
Celtic have signed 22 different players since Norwegian Deila took charge of the club in 2014, including former West Ham striker Carlton Cole. While some signings have proved successful plenty of others, like Cole, have not added anything to the Bhoys' squad.
Despite a squad that is almost bursting at the seams, Celtic are still on course to win their fifth consecutive Scottish title.
However, with the return of Old Firm rival Rangers to the top flight next season, a sixth title may not be so straightforward.