Barca have made no secret of their desire to poach the Brazil international as a replacement for the recently-departed Neymar.
They certainly have cash to spend and, with that in mind, the Reds are said to have rejected an initial bid of £72m for the talented playmaker.
Coutinho revealed earlier this week that he would be open to a move if it suited all parties but Yahoo Sport are now reporting that the South American is 'performing poorly in training' to try and force through the transfer.
Whether or not the claims are true is open to debate and there has been no word from either player or club, but it has also been reported that Nou Camp officials have already arrived on Merseyside to try and get the deal over the line.
Mundo Deportivo claim Barca directors Oscar Grau, Raul Sanllehi and Javier Bordas have flown to England to conduct what are said to be 'final negotiations' over a move for the 25-year-old.