Rojo joined Man United last summer and got off to a promising start at the club.
However, there were rumours that the Argentine had fallen out with van Gaal after he failed to join the pre-season tour of the United States of America due to a ‘passport issue’.
Rojo rubbished the reports by insisting that van Gaal and Rooney “are always” with him.
“They’ve supported me a lot and I’m grateful to them for that,” Rojo said.
“The manager and captain are always with me and they know the type of player and person that I am, so I thank them because they made a great gesture towards me.”
Rojo has worked his way back into the first-team following the injury to Luke Shaw but the 25-year-old needs to be more consistent if he is to stay there. Excellent performances against the likes of Manchester City have often been followed by subpar displays elsewhere.