Get excited football fans. The time is here. The time when your club has the opportunity to make a deal that could change their season.
It could be the difference between relegation and survival; between being champions and runners-up; between qualifying for the Champions League or Europa League.
And with the amount of rumours swirling around at this time of year, it can sometimes be difficult to decipher the truth.
Not to worry however, because here at Tribalfootball, we have broken down the week's hottest transfer rumours, and informed you whether to believe the paper talk or not.
Players Interested In: Anonymous centre-back, left-back and winger
Sunday Times reporter Duncan Castles has reported that Jose Mourinho is aiming for three big signings next month.
Castles says Mourinho will try to bring in a centre-back, left-back and winger. If the prognosis of Eric Bailly's injury is more than a month, centre-back could be priority number one. Besides Bailly, United's centre-back corps are suitable, but not exceptional. And they'll need someone exceptional if they are to advance deeper into the Champions League.
Luke Shaw has shown he is returning to full fitness, so left-back could be already filled.
The real decider is at the wing position. Mourinho failed to get one in the summer and his team has paid for it.
United have really lacked flair and dribbling on the wing, with Marcus Rashford, Anthony Martial and Jesse Lingard providing more power than guile.
I'm going to throw a curveball out there and say United should go for Alexis Sanchez.
Likelihood: They've got be gutsy
David Luiz - Chelsea
Players Interested In: Real Madrid
Well according to Spanish publication Don Balon, Blues manager Antonio Conte has given his blessing for the eccentric Brazilian to join Los Blancos - on loan.
Not much has changed in seven days.
Luiz's departure depends on Chelsea's ability to find a replacement as Conte's squad is threadbare.
It is a situation to monitor however, because if Conte does sign a centre-back next month, you can bet your bottom dollar Luiz will be out the door.
Likelihood: Wait and see
Now this is big.
Real have recently prioritised blooding youngsters and creating a solid team chemistry, which has resulted in three Champions League titles in the last four years.
Well now it's over.
Five points behind Barcelona, and struggling to find the back of the net, Icardi may be the man to save the day.
But will Inter part with him? And does Icardi even want to join Real?
Despite being right in with a chance to win their first Scudetto in seven years, Inter's Chinese owners would sell Icardi for over £100m. For the matter of whether he'd join Los Blancos, well, they say you never reject Real Madrid.
The transfer of Kepa to the Bernabeu seems more rudimentary. The 20-year-old is the next big thing, and if he doesn't join next month, he'll definitely be in the capital this summer.
Likelihood: Something must be done
The Spanish publication says Real are willing to fork out €140m for the Liverpool midfielder.
Los Blancos have also offered Coutinho a larger contract than their El Clasico rivals.
I guess everyone has had tunnel vision since the Blaugrana failed to sign Coutinho in the summer. Its just always seemed like he was destined to end up at the Camp Nou. But what about the Bernabeu?
I don't see it happening. Zinedine Zidane has far more pressing needs than a playmaker like Coutinho. That €140m could go towards Mauro Icardi.
Expect to see Coutinho in Catalonia, whether that's next month or in June.
Likelihood: Enjoy the beaches Philippe!
Aleksandr Golovin -CSKA Moscow
The CSKA Moscow forward has been on the Blues radar for sometime.
Chelsea's Russian owner Roman Abramovich has the necessary connections to ensure Golovin comes to Stamford Bridge.
The report suggests Golovin could be loaned back to CSKA so that he is playing regularly as he is expected to lead Russia into next's year World Cup.
The Gunners must do something this January if they are to get back into the Premier League top-four.
Likelihood: From Russia with love