The Bhoys boss has made a promise to his supporters.
And, during what he hopes will be a long stay at Parkhead, the 39-year-old has made a promise to supporters about how he intends to manage the club.
Indeed, Deila is fully aware Celtic can only operate within a budget and can't afford to spend freely if they are to remain financially stable.
As such, Deila insists he will never use any potential success to demand greater funds from his board.
The Norwegian told reporters: "I will never use my results to get more money. I will do the best for Celtic Football Club. What we have as a budget, I will try to do my best with and create something out of what we have.
"As long as I am developing myself, as long as I go to work enjoying it and seeing I can make the club better, I don't see any reason I shouldn't [be here for a decade]. To see people grow and see cultures building that's something gives me so much pleasure."
The Bhoys have sold a number of their highest-profile players in recent years in order to keep things ticking over at Parkhead. Departures such as that of Fraser Forster, Victor Wanyama, Gary Hooper and more have raised vital funds for the Scottish champions and that tradition could be set to continue under Deila.
It is a necessity for Celtic, as much as fans and coaches alike would prefer not to sell the club's best players, but it is one that ensures much-needed stability for the Hoops.