Last season, United struggled to score goals as they were heavily reliant on Zlatan Ibrahimovic, but they have already scored 21 goals in their seven league fixtures this season.
The Spaniard said: "I think we have 10 players that have scored this season already. That's a lot and speaks very well of the team, and that is the big reason for the good start.
"Anthony, Marcus, Jesse when he comes in the team is playing very good, Mkhitaryan is playing well and is doing great things. I think everyone is doing their bit, and I believe that the manager is happy with that."