“It’s early doors of course but I don’t know what my best partnership would be because I haven’t seen Rooney and van Persie together.
“Wayne has to play games and get game time now. I think Robin has still got a bit to do as well in terms of game time because he missed the whole of pre-season. In the Liverpool match he was playing against players who had 10 or 12 matches under their belt.”
Rooney could make only his second league start of the season on Saturday, after the forward looked sharp on his return from injury in the midweek cup match.
“He had a great training programme during the time he was off,” assessed Sir Alex.
“He was never out of the gym to begin with because obviously running was out of the question. But in the last two weeks he’s been gradually getting to the football part.”