Peter Crouch said he "felt sick" watching Liverpool "tear Barcelona to shreds" at Anfield on Tuesday.
The Reds overturned a 3-0 first-leg deficit against Barcelona to win 4-0 on Tuesday night and reach their ninth European Cup final.
Divock Origi and substitute Gini Wijnaldum scored twice for a Liverpool side missing Mohamed Salah, Roberto Firmino, Naby Keita, Alex Oxlade-Chamberlain and Adam Lallana through injury, with Andy Robertson failing to appear for the second half after suffering a knock.
Crouch, a former Reds striker, wrote in his Daily Mail column:
"When I look back at my final words in last week’s column, I find myself wincing. You may remember the subject was Lionel Messi and I stated it should be on your bucketlist to go to watch him.
"I had the chance on Tuesday but turned it down. I was only up the road in Burnley! What was I thinking? As Liverpool tore Barcelona to shreds to start an outstanding week for English clubs in Europe, I felt sick.
"Not only did I miss the opportunity to see the greatest footballer of all time, I missed one of the greatest sporting events, too. I assumed Barcelona would score an away goal and cruise into the Champions League final — but what Liverpool did to come back was sensational.
"It was a privilege to play in a semi-final but what I saw was miles ahead of the night when I was involved against Chelsea in 2007. I wouldn’t say it was better than Istanbul, as that was a final, but I will stick this statement out there: Beating Barcelona was Anfield’s greatest night. When I look back at my final words in last week’s column, I find myself wincing."
