Under the agreement, that move can't materialise unless Liverpool choose to offer him to clubs, including Barcelona.
Liverpool have no desire to sell any of their best players but this agreement should prevent any of them potentially having their heads turned, like Coutinho did, if Barcelona happened to show an interest in taking them to the Nou Camp.
The Uruguay global effectively forced his move to the Nou Camp despite the Reds being desperate to keep him.
Reports from Spain suggest that Barcelona will not be allowed to sign Liverpool players for the next two seasons.What's the story?
Barcelona have most recently been linked with a move for Sadio Mane, who unlike Salah and Roberto Firmino is yet to pen a new contract at Anfield despite ongoing talks.
According to the Daily Mirror, Barça have £36m left to pay off to the Reds, but that is all dependent on how the 26-year-old Brazilian performs over the course of his career at the Camp Nou.
And it has now emerged they were initially agitated by Edwards' insistence on the clause being inserted but were forced to agree to it if they wanted Coutinho.
Barcelona attacking midfielder Philippe Coutinho returned to group training on Wednesday, after being sidelined for two weeks due to a thigh injury.
Instead, the playmaker has increasingly played servant to the likes of Suarez and Lionel Messi, assisting them with their goal tallies.