Thank you for your reply. I certainly don’t know every detail. I have acquaintances who are fellow professionals in the field - when Caicedo signed I was curious about why this transfer was so tricky. I have had dealings more with the showbiz side of things, so I simply asked out of curiosity as a fan, knowing this person was in the field
Here is a superb NY Times article detailing specifics - no paywall!
https://www.nytimes.com/2021/01/21/sports/soccer/transfer-market-moises-caicedo.html
In short, three separate agencies - one in Germany, one in Argentina and one in Ecuador - all claimed to exclusively represent Caicedo. To reach a deal to transfer the player’s registration rights from his club Independiente, a buying club would have to go through hell and back negotiating with all of them. On top of that, the club also hires its only agents to sell their best assets for the best price.
The only reason Brighton got the deal done - and this is glossed over in the article - is that two years prior we had signed a young player named Billy Arce from the same club, who happens to be represented by the same agency (the very same agent) as Caicedo. It was this “in” that got the deal over the line.
South American ownership/agents are notoriously difficult to deal with. Many young players from poor backgrounds are “locked in” to very shady representation deals from a very young age, in return for immediate cash for them and their family. Players as young as 14 can be made to sign 50% representation deals in return for a few hundred quid.
Essentially it is a prime untapped market of talent, but it is extremely difficult to enter the marketplace.