In order to qualify for the Davis Cup Group Stage will take on Norway with Team Captain Viktor Troicki hoping to have Djokovic.
Djokovic was unable to help his country in the group stage this year which caused the nation to be eliminated from the competition as they still heavily rely on him. There are some solid players like Kecmanovic and Krajinovic, but they are very beatable without Djokovic.
That is why Troicki is hopeful about having Djokovic against Norway as they will face Ruud at home and that's going to be tough:
"We got one of the toughest possible opponents, but only because of Casper. The other Norwegian players are not so famous names. As always, everything depends on us, in what composition we will play, whether everyone will be ready. We are counting on Novak, but the schedule is inconvenient because of the Australian Open."
As Troicki mentioned it's going to not long after the Australian Open which would make things complicated as Djokovic is widely expected to go deep in the event. He might want to rest after such a brutal run with the conditions in Australia.