From an outsider's perspective, the summer transfer window can be a joy to behold, but for those more closely associated with the business end of football, it can prove to be a nightmarish period.
Managers and players alike can go through tumultuous times in trying to find the right fit to suit their needs, and in the money-spinning Premier League, pressure is at a constant high to find the correct formula.
Having officially opened on July 1, the summer window allows Europe's elite to now go about their spending in that pursuit, with every side in the English top flight requiring that specific something above all else.
Each outfit is different, so while one side may have a crop of promising youngsters coming through in a certain area, it may require that touch of world-class talent, whereas some are completely lacking in one department altogether.
We've gone about identifying these critical portions for every squad in the running, some needs translated into specific positions, while others require something a little more abstract.