Saul shone in the first-leg of the semifinal for Chelsea's 2-0 win.
Cole said, "I thought he played well. I think he had good balance with Jorginho in there, he had a little bit more license for freedom.
"Yes, he played in a two but he could go out into those wide areas a little more with Jorginho just sat a little bit.
"In terms of his overall performance and the worries and concerns people had around him, he's done enough tonight to warrant that he should get more opportunities."