The Egyptian hit a wonder goal in Liverpool's defeat of his old club on Sunday.
Salah and Cole were teammates at Chelsea before they went their separate ways.
Cole, now with Derby, was asked if he could see the player of today when they were at Cobham: "To be honest, no.
"I saw in training the ability that he had but he seems to have become more ruthless.
"I don't mean selfish in a bad way, but he wants to score goals.
"That's his job. He needs to score goals.
"[Salah], Firmino and Mane all play well together but I think he's become a little bit more 'it's about me now, it's my time'.
"He's had enough of the other players, being in their shadow, and he wants to be the main man."