Coutinho's absence from the Liverpool squad has only fueled speculation continuing to circulate around his future, with Barcelona long-term admirers of the midfielder, who is seen as an ideal replacement for the recently departed Neymar.
Liverpool refused the sale of Coutinho during the summer transfer window.
Liverpool are "furious" with Barcelona's latest attempt to sign Philippe Coutinho, according to reports in Spain.
"I think the Brazil system is similar to the one we use at Liverpool, with lots of movement, players open out wide and quality midfielders who join the attack and score goals", Firmino explained.
"Now I feel 100 percent fit, I have recovered and I am in a good shape to be available for the game against England", he added.
But that's not to say Coutinho favours staying at Anfield, with the Spanish paper going on to claim: 'The Brazilian does not want noise, nor third parties, getting in the way of negotiations between Liverpool and Barca'.
Brazil worldwide Rafinha, who is now injured, wants to leave the club in search of first-team action elsewhere ahead of next summer's World Cup. I am honoured to wear this shirt whenever I can.
'England will be our first European opponent under (coach) Tite. "Football has been very generous for me".
However the 25 year old is set to put his fitness at risk and play for his country during their game against England on Tuesday.
"Every day, I work harder than before to improve myself and become a better all-around footballer", he concluded.