Van Persie beat Rooney to the Golden Boot award by three goals last season, with the red-hot Dutchman scoring 30 in the Premier League.
“The two of us were fighting for that Golden Boot last season and now the two of us are hopefully playing together,” said Rooney, who is set to line up with United’s other major summer signing Shinji Kagawa in an ‘arrowhead’ formation with Van Persie at the tip.
“Obviously we’ll have to work over the next few weeks and try to develop an understanding.
“Hopefully it will come quite quickly and we can form a good partnership.
“It’s great for the players and the fans to sign a player of Robin’s quality.
“I haven’t thought about how my role will change. But no matter what role the manager wants me or Robin to play, we will have to do that.
“I know over the last two or three years I’ve been the one scoring the goals. But you can’t do that without the players to give you the assists.”