Coutinho swapped Merseyside for northern Spain in January last year in a whopping £142million to seal a dream move to the Nou Camp.
But despite a promising start to life with the Catalan giants, the midfielder endured a difficult campaign in 2018-19.
He scored just five La Liga goals in 33 outings - three fewer than he managed in 18 games in the second half of the previous season.
Sections of the Barca support let their feelings be known towards the end of the term and there have been rumours linking him with an exit.
Liverpool and Manchester United have both been touted as potential destinations - but Barca would rather use him as a makeweight to Paris Saint-Germain in a potential deal for Neymar, according to Mundo Deportivo.