The duo have not impressed for Celtic this season.
The Norwegian boss has confirmed he will leave the club in the summer after two years in charge.
It has been a difficult spell in charge for him, with his ability having been questioned since the day he walked through the door.
One of the areas many feel he has struggled is in the transfer market, especially his acquisition of Scottish players, as a number of signings have failed to make the grade.
Most would consider Allan and Christie among those, but Deila has backed them to come good in future.
“We have brought in a lot of Scottish players and they have been important for the team,” he told the Independent.
“Ryan Christie is one and I know that he will be a great success in the end. Scott Allan has trained well he has talent. He maybe didn’t suit the style I want to play but he can get in the team if it’s another style.”
It will certainly be interesting to see how both players are treated once Celtic confirm their new manager this summer.
The next boss is sure to want to be make his own signings, and most likely be determined to cut down what is a bloated squad at present.
Those who have under-performed will surely be at the top of the list and both Allan and Christie will be hoping whoever it is sees something in them as Deila clearly does not.