The Sunday Mirror says Sir Alex Ferguson remains committed to leaving a lasting legacy at United and continues to monitor Halilovic.
But the youngster says he does not want to think about the speculation just now and insists his focus is on playing for Zagreb. He said: "Stories about Manchester United? I do not spend much time thinking about those rumours. Dinamo Zagreb will decide what happens.
"All I have to do is try to improve as much as I can - everything else does not matter now."