The 20-year-old Serbian striker met with United officials last week to discuss personal terms on a move to Old Trafford but negotiatons broke down.
However, he is still confident that a deal will be agreed for him to move from Partizan Belgrade to United.
"If Partizan and Manchester discussed for month and a half, it is difficult to believe that I would settle everything in just two days," he has said.
"The representatives of Manchester presented their vision of the future, which, sadly, at that moment, didn't convey with ours.
"Anyway, the contact will remain and I believe that we will have a happy end.
"I haven't started to think about another club, I firmly remain positive on the whole matter.
"When I arrived at Old Trafford that left an enormous impression on me. The training facilities also.
"The club functions perfectly as everybody acts as a family. There is big respect among players no matter if you are in the first team or in the reserves."