The young midfielder was at the centre of one of the summer's biggest transfer sagas.
The Gers had several bids for the attacking midfielder rejected before the Hoops swooped in to clinch a deal and King is grateful they did.
“…No matter what we did they were not going to sell to us,” he said.
“Therefore, I’m very, very grateful to Celtic for taking him away from Hibs. They did us a favour rather than leaving him behind."
The 23-year old was the Edinburgh club’s most prized asset and his sale has undoubtedly weakened their prospects of mounting a title challenge.
Hibs have had a mixed start in his absence – with two wins and two defeats – and currently sit in fifth place in the Scottish Championship, nine points behind runaway leaders Rangers.
Mark Warburton’s men have been irresistible so far this season, bagging 19 goals in their first five games, and any pre-season hope of a Hibs title challenge now seems a distant memory.
It’s early days for Scott Allan at Celtic and the silky midfielder is slowly being introduced to the first-team set-up at Parkhead.
The former Hibs man has appeared twice off the bench so far and faces a tough task to break into the first XI given the wealth of attacking options available to the Scottish Premiership champions.