The striker signed as a free agent this summer and is working tirelessly to get himself ready for action.
Speaking about making his second debut for the club, Carroll said: "I can't wait to just walk out at St James'.
"I really can't. Honestly, I can't describe it.
"I walked into the stadium when I was signing and walked down the side of the pitch. Just an unbelievable feeling.
"When I put the shirt on and walk out… I can't describe it.
"I'm more buzzing to put it on now, the shirt, than I was when I was 17. I'm so excited."