De Jong was the Magpies' only incoming transfer business last month when an agreement was reached with Borussia Monchengladbach to loan the player to Tyneside until the end of the campaign.
There is also an option to buy, but with an £8m price-tag he knows he must impress during the next few months to persuade manager Alan Pardew to keep him on a full-time basis.
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De Jong has already made up his mind what he wants to do and is keen to prove he can succeed in the Premier League following an unsuccessful stint in the Bundesliga.
“I would like to be important for this team, in terms of goals and assists, and work hard,” said De Jong, who cost the German club £13m from FC Twente in July 2012.
“I'm on loan with an option to stay and I would like to go on with this option if it is possible. Of course I would like to try to show what I can do and stay. It's a really big and nice club, Newcastle would be a great place to play.
“I am really happy that I have come to Newcastle. I have played from the start here at Chelsea, I have had my first full game and I feel good. I hope I can keep going from here and I hope in the summer to get it sorted.”
With Loic Remy suspended and Papiss Cisse still ruled out through injury, Pardew opted to start with De Jong at Stamford Bridge on Saturday. That was despite a lack of first team football this season.
It was De Jong's first start of the season and all of his previous 14 appearances since August have been from the bench, so it was understandable he lacked sharpness.
But De Jong was satisfied with his contribution in the 3-0 defeat to Chelsea, when he was largely a peripheral figure in the second half as the Premier League leaders dominated.
“Before I arrived I had the tests to see how I felt and I felt quite good,” he said. “I have played 90 minutes here and I still feel like I could have played longer, I still had some energy left, so that is good to know.
“It's been nice so far for me because I know Tim Krul really well from the Holland national team. I also know Vurnon Anita and Cheik Tiote from FC Twente, they have helped me to settle. All of the players have been nice to me also, so I have liked being a part of it already.”
De Jong struggled on his first outing seven days earlier when he was introduced as a second half substitute in the defeat to Sunderland.
To have suffered two reversals, conceding six and scoring none in his first two games for the club, is not the sort of start he had hoped for.
De Jong, 23, said: “I have a really good feeling about the place. After the Sunderland defeat it wasn't a nice place, the disappointment was strong.
“That was a game we couldn't lose and we did, of course. It was never going to be nice but we have played quite well in stages of this game.
“From what I saw here against Chelsea, I think we can go on and do better in our next game at home (against Tottenham).”
De Jong is likely to keep his place to face Spurs on Wednesday night, with Pardew suggesting after the Chelsea defeat that the Holland international was one of the few plus points.
The Dutchman, after seeing Eden Hazard hit a hat-trick, was not surprised by the quality he came up against.
He said: “It was probably what I expected. If you lose the ball against Chelsea you know it's dangerous. There were times when we played some good football, but when you have the ball you soon have two or three players around you.
“It was a tough first game, Chelsea are a difficult team. It has been a tough start. To lose 3-0 to Sunderland at home last week was hard and then we lose the same again here, that's not been nice.”
Newcastle do not expect to have Fabricio Coloccini, Yoan Gouffran or Tiote back from injury to face Tottenham. Cisse's back problem will be assessed, while Remy remains suspended.
The injury situation worsened at Stamford Bridge, where full-back Mathieu Debuchy had to leave on crutches following the first half fall on his calf which will be assessed further again today.