Mirko Vucinic is refusing to believe that Roma have no chance of beating Manchester United in the UEFA Champions League.
Roma must overturn a 2-0 deficit at Old Trafford on Wednesday to progress to the semi-finals of the competition.
Vucinic feels there is still everything to play for and thinks Roma can emerge triumphant if they adopt the correct approach.
"The most important thing will be playing with the mind. We go to Manchester with the right spirit," the striker told the Italian press.
"Win possibilities? 50-50, but we must be calm."
Francesco Totti has been ruled out of the match with the same thigh injury that kept him out of the first leg.
Vucinic accepts that it is a blow to be without the Italian talisman but is hoping to take up the mantle of match-winner.
He said: "Totti's absence? I'd have to put on the ground everything I have because it won't be easy replacing a champion like him."