Staring down the barrel of relegation, the Magpies knew they had to act in the market in order to stave off a third relegation in just over a decade.
After a busy start to the window, one that saw them add Kieran Trippier and Chris Wood to their ranks early on, the Magpies had a quiet couple of weeks before a flurry of action at the end of the month.
Matt Targett, Dan Burn and Bruno Guimaraes also joined during the dying hours of the window - but plenty of others were linked with a move to the club.
Here, we take a look at what has happened to 19 players that were linked with a move to Newcastle United last January.
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17. James Tarkowski
Tarkowski couldn’t prevent Burnley’s relegation to the Championship as he ran down his contract at Turf Moor. Newcastle’s moves for Dan Burn and Sven Botman meant Tarkowski wasn’t seen as a priority as he moved to Everton in the summer. Photo: Lewis Storey
18. Divock Origi
Newcastle’s aim to add goals to their squad found themselves being linked with the Belgian last winter. Instead of moving to Tyneside, he stayed at Anfield for the remainder of the campaign before moving to the San Siro and joining AC Milan. Photo: Maurizio Lagana
19. Georginio Wijnaldum
After a disappointing spell at PSG, Wijnaldum moved to Roma in the summer but suffered a serious injury that means he has played just 12 minutes for his new side. Photo: Francesco Pecoraro
20. Duvan Zapata
Newcastle were briefly linked with a move for the Colombian international last winter, with intensifying links in the summer that a move for the striker could be on the cards. However, he remained at Atalanta and has registered just one goal in an injury hit season since then. Photo: Emilio Andreoli