Manchester City and Manchester United could look to utilise the January transfer window to their own benefit over the coming weeks - despite undergoing strong summer transfer windows last time out.
United were in the midst of a complete rebuild having lost interim boss Ralf Rangnick; having lost Paul Pogba, Jesse Lingard, Juan Mata, Nemanja Matic and Edinson Cavani after their contracts came to a close at the end of the season, new boss Erik ten Hag knew he had a serious rebuild on his hands, though he recruited well.
Experienced heads such as Casemiro and Christian Eriksen have entered the fold, whilst Antony, Tyrell Malacia and Lisandro Martinez have all joined to create a more penetrative United side that currently sits fifth in the table. With Champions League so nearly in their grasp, fans are willing Ten Hag to spend again in January to carry them to the top four.
Meanwhile, City carried on their usual business of being extremely astute with the arrivals of Erling Haaland and Julian Alvarez, whilst Manuel Akanji, Kalvin Phillips and Sergio Gomez all joined for backup after an incredibly successful season resulted in just one trophy.
Only Arsenal's strong start has seen City fall behind in the title race, and Pep Guardiola's men are expected to challenge at the summit as per usual before the end of the season is nigh. However, the Catalan won't wish to flounder behind his old friend and assistant manager Mikel Arteta - and could look to splash the cash as a result.
But when does the window open and close? Let's take a look:
The transfer window opens at midnight on January 1. Luckily for those staying up for New Year's Eve celebrations, you even have a countdown timer to help you celebrate - of course, some across the country will be celebrating for other reasons.
Club can open talks and agreed terms with clubs now ahead of the window, although the deals cannot be processed until January 1.
Also, clubs from abroad can agree pre-contract terms with a player if they have just six months left on their deal. In City and United's case, any clubs that don't play in England, such as European powerhouses and even Celtic and Rangers, can agree terms for their player for a summer move if they can agree personal terms.
The January transfer window will close at 11pm on January 31. This means that clubs will no longer be able to complete deals once the hour is up.
Only deals that have been granted an extension - usually an hour, or two hours at the maximum - are allowed to go on late into the night to find a solution.