The thing about the January transfer window is that it arrives at the busiest part of the season. Just as your squad is at its most stretched, you can add players to it.
A clever deal, wrapped up in November or before, can be completed in the first days of the month, and the player can be training with his new teammates and even playing shortly after the New Year.
Chelsea were one of the fastest out of the block with their deal this time, grabbing Christian Pulisic, but he won’t arrive till the summer.
A squad heavily hit by injuries and impending departures still hasn’t had any January additions made, and we’re now 3 games into the month already.
If we are looking to add players for the first team, we’d better make it soon. The new additions may be missing out on some of the most important games they can contribute to.