Ferguson said: “Maybe there is a bit more learning to be done to get to the level of Dwight Yorke and Andy Cole in 1999.
“It is right we have not produced the goals we have in the Premiership. But it is different in Europe. The tactical awareness you need makes it more difficult.
“I am not really worried about Wayne’s goal tally. He said himself he got 19 last season and if he got the same this time he would be quite happy and he already has 15.
“He is still playing well. You just have to look at the videos and analyse his possession and movement.”
