Collymore wrote in the Sunday Mirror: "Rafa Benitez and Fernando Torres will experience very different emotions when they return to Anfield today.
"The Chelsea manager will embrace the reception. Liverpool supporters will sing his name, chant about their success in Istanbul and laud him for all the other great times he gave them before leaving in 2010.
"But for Torres, it will be a time when he is full of regret. He will be labelled by many fans as scum, for leaving after saying he would stay. And they will mock him for how his form turned for the worse in London.
"Trust me, the Spanish striker will be hurting when he is there today.
"Fans on Merseyside are known for their loyalty, for showing their appreciation to ex-players – but it wasn’t all goodwill when I went back. I was close to tears after some of the abuse and ‘Spice Boy’ jibes.
"It truly hurt that I had not received the kind of reception I had hoped for from Liverpool, the bastion of fair play.