Rossi have been struggling with an ankle injury, but is ready for the clash against Celtic.
“For me the match has more on it than three points, as they will be a very tough rival,” he told skysports.com.
“We have been working on the match with Celtic and the key is in attack – if we can score a goal early, then I think it will open up.
“If time goes on without a goal then nerves can come into play and that can damage our work on the field.
“People believe that Celtic is a comfortable opponent, but they real are a danger and they will be hard to beat.
“Scottish football has improved in the last few years, but if we play to our system then it should be impossible for us to fail in El Madrigal – our stadium is a talisman for us and our rivals know this.”
He added: “I am fully recovered now and I have big hopes, to play in the Champions League is a dream for any player and after missing the match at Old Trafford I now have the chance to face Celtic.
“The Champions League is the most important club competition in the world and our group is very interesting, any footballer would want to be involved.”
