Coutinho, who has been a menace from the bench from Bayern en route to their sixth Champions League title netted two goals and an assist in the 8-2 mauling of the Blaugrana in the quarter-final stage.
And despite being recognised as one of the finest playmakers in world football, the Brazil international is unsure about where he will be playing his football in the 2020/21 season.
"I haven't thought about this. I have to go back and I want to work hard to have a great year," he told Movistar+ after their triumph in Lisbon on Sunday. "I don't know if [it will be] in Barcelona."
Having joined the Blaugrana from Liverpool after a long protracted transfer saga in a deal worth a reported €160-million, Coutinho failed to establish himself in the starting XI which promoted the temporary spell in Germany.
And with Barcelona finishing trophyless in a tumultuous campaign, their loanee helped the Bavarian gainst secure a historic treble while he contributed 11 goals and nine assists in all competitions.