The 25-year-old notched an early brace for his native Norway in their penultimate 2018 World Cup qualifier against Group C minnows San Marino on Thursday evening (5 October), but was replaced by Saint-Etienne forward Alexander Soderlund in the 62nd minute of an 8-0 hammering in Serravalle due to a hamstring issue.
Fourth in Group C and 17 points behind leaders Germany, Norway have no chance of making next year's finals in Russian Federation, but they hammered San Marino on Thursday with King grabbing two goals before being substituted in the 62nd minute.
"I felt something in my hamstring during the game yesterday and with my history we're not taking any risks", he said, as quoted by Reuters.
"Myself, Lars (Lagerbeck, Norway manager) and the medical team have discussed and agreed that I'm going home to get back as early as possible".
King has scored two goals in eight appearances across all competitions for Bournemouth this term and will no doubt be a major miss to Eddie Howe should he be forced to sit on the sidelines when they travel to North London to play Tottenham next week. "He has really good qualities, he's physically strong, he's very quick, both with and without the ball, and his finishing technique is really good".
King has scored just one goal this season, however, as Bournemouth have suffered a hard start to the campaign, sitting in 19th place with four points from their opening seven games.
You can see Norway's match with Northern Ireland live on Sky Sports Main Event from 7.15pm on Sunday.