With every transfer window that passes by, the food chain in the football transfer market becomes more defined: Smaller clubs feed the top flight, and the elite clubs take their pick from there. It is the elite clubs' fix for all manner of problems. Unable to sign a dominant center back? Need proven quality in midfield? Can't ever seem to find a goal-scoring striker? There are places you can go. There are certain clubs across world football -- the likes of Brighton & Hove Albion, Eintracht Frankfurt, Sturm Graz, Woifsburg and more -- who have become masters of recruitment in specific positions.

These clubs are the best-in-class at identifying and recruiting talent in certain areas and flipping them for a profit. They're where all of Europe's top teams should be searching.

So, if your club has a positional need to fix, where should they look, and how do those clubs do it? Here is your cheat sheet.

Before we begin, a quick note: Goalkeeper is the only position not covered here. Several ESPN sources consulted for this piece warned against it. Simply put, no club is particularly expert at signing them. It's an individualist and (oftentimes) chaotic area of the market.

Despite heavy player turnover in the last few seasons, Bournemouth have been able to continually reload and achieve great results in the Premier League. That's only possible if you nail your recruitment.

The Cherries are the headline side in one of modern football's most effective multi-club organizations, benefitting from the shared pool of knowledge the sister clubs -- such as Lorient (French Ligue 1) and Moreirense (Portuguese Primeira Liga) -- bring, and they boast a clear strategy when it comes to making signings.

They have particularly excelled at recruiting center backs. With a clear playing style cemented by manager Andoni Iraola, they are able to focus on players with traits that suit his tactical system: they must be comfortable defending high up as the team presses and strong in one-on-one duels.

The club are also attentive to the demands of the Premier League as a whole, with one scout suggesting they all-but require a minimum height of 185cm (6-foot-1).

It is a strategy that has paid consistent dividends. Last summer, their first-choice center back partnership was poached by reigning European champions Paris Saint-Germain (Zabarnyi) and continental titans Real Madrid (Huijsen) for over £100 million combined. Senesi's contract is set to expire this summer and he will no doubt entertain some big offers for a free transfer.