Carragher wrote for the Telegraph: "I believe the club's response should have been activated on October 19, the day Virgil Van Dijk's cruciate knee operation was confirmed.
"Hindsight is unnecessary. I said then I did not think Liverpool could win the league unless they had a new centre-back in place on January 1.
"They needed one before Joe Gomez was injured. His and Joel Matip's appearance record was informative of that.
"And although Fabinho has been outstanding, he would be more influential in midfield. It has caused a chain reaction throughout the team."
He added: "Maybe the club thought (Jurgen) Klopp is so good he can overcome any situation. If so, the last few weeks are a reality check for them.
"At the moment, the impediments - albeit many of them unforeseen - look too much to overcome in order to meet the highest ambitions."