The 22-year-old returned from a loan spell with Carlisle at the end of the regular season and was immediately thrust into an unorthodox left-back role for the first leg draw last Friday.
But rather than yearn to occupy his normal position in midfield, Morris is content to do whatever his manager asks of him.
"It was comfortable, I've played there lots of times before so there were no problems," he told his club's official website.
"It was a little surprising to play there but there were no problems. I was just happy to get the nod and showed what I could do."
Morris also believes that the Dons are concerned about his side's capabilities following their 2-0 win at stadium:mk earlier in the season, adding: "Psychologically they know deep down that we beat them there."