The 19 year-old has been a long-term target for United, but is also interesting PSV Eindhoven.
"I'm used to scouts looking at me, there were scouts from Manchester United in the stadium," said Rotariu after their friendly on Monday against Otelul Galati.
"I think the scouts see me more than my family."
"It's nice that there are clubs after me, that shows that I'm doing well," continued the attacker. "But I do not necessarily think about leaving.
"When you go abroad, you often need an adjustment period of six months or a year. This is important for a young player."