That’s according to Alan Shearer, who claims Liverpool will be hard-pushed to find a replacement in the January transfer window.
The Brazil international will officially be unveiled as a Barcelona player later today after finally sealing his “dream” move.
His departure will come as a huge blow to Liverpool fans who only days earlier were celebrating Liverpool’s owners for signing Virgil van Dijk.
But Newcastle legend Shearer believes losing a player of Coutinho’s calibre, who had scored 12 goals in 20 games this season, will seriously harm their chances of finishing in the top four.
“Philippe Coutinho leaving is going to severely dent Liverpool’s top-four and Champions League hopes,” Shearer wrote in The Sun.
“Of course, £145million is a fantastic fee for a player they signed from Inter Milan for just £8.5m five years ago.
“But I’ll be amazed if they can find a replacement for him this month — and it’s a big risk for Reds boss Jurgen Klopp.”
He added: “It is a hell of a lot of money but transfer fees have gone up by about 25 per cent since Neymar’s move to Paris Saint-Germain last summer.
“And while Liverpool now have the cash in the bank, selling Coutinho could cost them millions more if they fail to qualify for the Champions League.”
Liverpool return to action on Sunday when they host Premier League leaders Manchester City (4pm).