He said: “We returned from Manchester with loads of positive energy and this is very important. We played in a great stadium against a superb side.
“We all know it was just a summer friendly and that we still have to work hard to be the Inter that we want to be, but these victories are important and are morale boosters.”
Stankovic believes the Nerazzurri are one of Europe’s top sides following their win at Old Trafford.
He added: “After a match like last night, we can and must all feel part of one of the best continental outfits, which has the quality and the mental strength to win everything.”