Kop boss Jurgen Klopp splashed the cash in the summer.
Mohamed Salah and Alex Oxlade-Chamberlain were both drafted in for big money.
But despite coughing up for fresh attacking talent, Klopp failed to seriously invest at the back.
Liverpool could only manage a 1-1 draw with Spartak Moscow last week in the Champions League.
They also recored a 1-1 stalemate with Newcastle at St James’ Park on Sunday.
Wright says Liverpool’s defensive woes have reached shambolic proportions.
He told The Sun: “I know Liverpool can be as entertaining as it gets when they are flooding forward, with their breakneck attacks and wonderful finishes from Philippe Coutinho, Sadio Mane and the rest.
“But defensively they continue to make such laughable mistakes, it’s as though no one ever thinks, ‘Hang on a minute, what happens if this breaks down and they come at us?’
“Klopp says he could write a book on defending in two hours, and maybe he could.
“But doing it in theory is a world away from doing it in practice — and Liverpool certainly aren’t.
“I’m no defensive coach but even I can see the mistakes.
“At Newcastle on Sunday the centre-halves were so far apart, with only one man to mark, and Jonjo Shelvey had acres of space.
“That’s what they have to be working on in training. Things like one centre-back taking the man and the other dropping to the side or in behind. It’s simple, defensive logic.”
