Former Liverpool striker Robbie Fowler believes the club must improve on their transfer work.
The ex-Reds marksman has been critical of his old team and their performances this season.
Fowler believes that if they want to maintain their progress under boss Jurgen Klopp, they must back the German in the market.
He wrote his column for The Mirror: "I'm not having a go in any way at the players involved, but how much have they spent on effectively refreshing their forward line and replacing Sadio Mane? A conservative estimate says 150m.
"But what have they got for that money - and it's a huge amount, despite the fans complaining the owners haven't invested? Potential, that's what.
"Darwin Nunez looks exciting at times, but he's far from the finished article, and it could be quite a while if we see him fulfil, if at all. I think the same could be said of Cody Gakpo. Neither of them hit the ground running, and that's being kind.
"Luis Diaz was a little different. You could argue he was Liverpool's best player until he got injured. But as a replacement for Mane? Not on the same page yet as a finisher. And the injury problems he's already had hardly instill confidence.
"I think that's been one of the major issues. They've spent money, but it seems to be club policy to go out and buy young talent, rather than the finished article, despite the high prices."
