Wit the the window now shut, players and club alike must now see if January transfer gambles have paid off over the last half of the Premier League season, whether jostling for Europe or fighting for safety.
Manchester United are in a positive place after reinforcing midfield with Bruno Fernandes and their attack with the left-field Odion Ighalo, but Chelsea have failed to add any more players to a thin squad.
Here, Sportsmail looks at who has won and who has lost following the closure of the January transfer window.WINNERS
The Red Devils managed to land a marquee signing in Sporting Lisbon midfielder Bruno Fernandes on Thursday.
Manchester United held a long-term interest in the 25-year-old and to finally get the deal over the line means they have turned out to be winners following the deadline.
Ole Gunnar Solskjaer's side are currently stretched in midfield with Paul Pogba and Scott McTominay on the treatment table.
Manchester United were able to finally seal a big-money move for Bruno Fernandes
Fred has impressed in the heart of midfield this season but Fernandes can bring that creativity and the link between midfield and attack that United have been missing.
Fernandes scored 15 goals and supplied 14 assists in 28 matches for Sporting Lisbon this season and so can ease the burden on United's frontmen.
The last-gasp loan capture of Odion Ighalo may appear baffling but he could prove an inspired short-term stopgap as injuries bite a thin squad.
United also let go of Ashley Young for £1.5million to Serie A side Inter Milan, who with just six months left on his deal could have gone for free in the summer.
They also sent out-of-favour defender Marcos Rojo out on loan, which was another good move as the squad overhaul continues.
The surprise, last-minute capture of Odion Ighalo will boost the club's striking options
The Portuguese boss acted fast during his first transfer window as Tottenham manager.
Gedson Fernandes was his first signing of the month on an 18-month loan deal to bolster his midfield ranks while Steven Bergwijn has strengthened Spurs' wide areas.
On Bergwijn, Jose Mourinho said: 'He is good for us now and for our future and the direction we want to go in. He fits our way of playing. He is young, creative and enthusiastic, and can create a connection with Tottenham fans.'
Jose Mourinho believes Steven Bergwijn can be a signing for the present and the future
The Portuguese enjoyed a positive window as he began to shape the Spurs squad
But perhaps the most addition in January was the acquisition of Giovani Lo Celso on a permanent deal from Real Betis.
The Argentine has begun to find his feet in England following a six-month loan spell and has the ability to fill the void left by Christian Eriksen.
The fact that Spurs were able to move wantaway star Eriksen to Inter for £17.5m rather than allow him leave for free in the summer has worked well.
As has letting left back Danny Rose leave on loan following his heated exchange with Mourinho.
Mourinho admitted he was happy in his press conference on Friday despite failing to bring in cover for the injured Harry Kane but Spurs have improved their options.
Tottenham completed a permanent move for Argentinian playmaker Giovani Lo Celso
A remarkable first half of the season on their return to the Premier League has only been enhanced by some shrewd transfer moves during January for Sheffield United.
Whereas many clubs in their position may have rested on their laurels or focused on retaining what they had, instead the Blades have been active in recruitment while keeping their squad lean.
The early-window free transfer arrival of Jack Rodwell is a little baffling but he may prove to be a smart back-up signing.
Should he live up to his potential, the club record £22million capture of Genk's Norwegian midfielder Sander Berge could prove to be the signing of the season.
Sheffield United signed highly-rated midfielder Sander Berge for a club-record £22million
Highly-rated and just 21 years old, Berge is a genuine statement of intent from Chris Wilder and suggests minds are quickly turning to a push for European qualification instead of merely staying up.
The loan departure of Callum Robinson to West Brom, just six months after he briefly became a club record buy, also demonstrates a ruthlessness should indivdual players drop below the high standards the squad are setting.
Callum Robinson was allowed to leave Sheffield United on loan just six months after joining
At long last, Christian Eriksen finally sealed a move away from Tottenham to join Antonio Conte's Inter Milan.
From a scrap to reach the top four under Mourinho, the Dane will now play a key role in a Serie A title challenge.
A move away from north London during the summer was ultimately thwarted, and during the club's early season struggles Eriksen regularly looked exasperated at his situation.
Although things threatened to get messy towards the end, Eriksen was ultimately able to find the fresh start he craved six months ahead of schedule.
Inter Milan were able to seal the January signing of Christian Eriksen from Tottenham
From 2016 title-winner, England international and a £30million move to Chelsea, things have unravelled