The Premier League side have signed two new midfielders during this window, which may leave Colback's place in the team in doubt.
Jack Colback has insisted that the arrivals of Jonjo Shelvey and Henri Saivet have given everyone at Newcastle United a boost, even if the addition of two new midfielders leaves his own place in Steve McClaren's side in some doubt, the Newcastle Chronicle reports.
Shelvey and Saivet both made their debuts during the Magpies' 2-1 victory over West Ham at the weekend, with the former Swansea man putting in a particularly impressive first performance for the club. And Colback explained that the two signings have lifted everyone's spirits at St James' Park.
"It always gives every around the club a lift. Jonjo was instrumental for the two goals," Colback told the Chronicle.
"Credit to him, it was a great start, and Henri came on as well."
Despite the positive impact that the pair had following their moves, Colback would be forgiven for being slightly concerned about what their arrivals may mean for his chances of first-team football.
The former Sunderland player insisted that the competition will benefit the squad as they look to drag themselves out of trouble, but also vowed that he does not plan to give his place up easily.
"The competition is there [in central-midfield], and you know you've got to perform, otherwise there's someone there to step in," Colback added.
"All you can concentrate on doing is your own job."
Colback was arguably one of the few players in McClaren's squad to emerge with any credit during a very difficult first few months of the campaign. His desire and passion was often not matched by his teammates, and that contributed to the club getting dragged into the relegation scrap.
And while McClaren has bolstered his midfield options with quality, he will know that he will still need the fighters like Colback if the side are to put themselves above the bottom three.