Ferguson believes Powell can fill the boots of club legend Paul Scholes.
Powell told United Review: "For someone like him to say he thinks you can do that is amazing to hear.
"The expectations of you are there, but it’s fulfilling those expectations which is the challenge, especially when you consider that there will probably never be another Scholes. What he has achieved in his career is more than most people can dream of – to achieve even half of what he has would be brilliant. Hopefully I’m on the right path."