It is understood that Barca were prepared to pay in excess of £100m for Coutinho in the summer transfer window, but the Merseyside outfit rebuffed the interest in order to keep hold of the playmaker.
The 25-year-old is believed to have handed in a transfer request in order to force a move to Camp Nou, although the Reds held firm, which proved an unpopular decision with the player.
Coutinho has admitted for the first time that he wanted to make the move to Barcelona, but the attacker has vowed to 'respect' Liverpool after failing to engineer an exit.
"What happened was that I received an offer for work and, in life, sometimes you're interested and sometimes not. In my case, as everyone knows, I was interested — and my family as well," Coutinho told ESPN Brasil.
"It was a complicated month for me. Everything is done now and I have to concentrate to ensure I have a good year and help my team. I want to help Liverpool and the national team.
"I have always respected Liverpool, the fans, the players and the directors. It is a great honour to have received an offer from such a great club — but it's the same here. Liverpool is a great club."
Coutinho made his first start of the season in Liverpool's 1-1 draw with Burnley in the Premier League on Saturday afternoon.