England meanwhile are gunning for a first title since 2011 with a win in the Eternal City and a favourable result in Paris between Ireland and France.
But after a 2013 that saw the Italians pick up the memorable scalps of Ireland and France, McLean is desperate to repay the Azzurri faithful on Saturday.
"The affection of the fans, unchanged in spite of the defeats, is a nice feeling," he said.
"On Saturday we will aim to do better on the field as a reward for all this support. We will try to give them a final satisfaction.
"The fans are always with us, when we get positive results and even when we do not quite match the heights we are aiming for."