Jurgen Klopp believes Dortmund will get better and his new players are settling in and will take sometime for them to gel.
With the loss of Robert Lewandowski to Bayern Munich, Jorgen Klopp has strengthened his squad with Adrian Ramos, Shinji Kagawa, Ji Dong-won and Ciro Immobile, the signing of defender Matthias Ginter and securing a permanent return for Nuri Sahin.
A season-opening loss to Bayer Leverkusen was not the kind of start Klopp would have expected, but things look better after a 3-2 win over Augsburg before the international break.
Immobile is set to recover from an injury in order to start up front against Freiburg on Saturday and Klopp picked last season's Serie A top-scorer as a perfect instance of where improvements can still be achieved by his team.
Klopp said of the Italalian striker: "He's a real goal scorer.
"He scored a nice goal [against the Netherlands last Thursday] and that will be good for him. But our only problem is the pace in which developments obviously have to happen in football.
"You always get asked about a new player in a new club after a really short time of being able to train together, that's our only problem. Everything else is fine.
"I hope that in three years we'll look back and no one remembers the first five or six games. He needs time to integrate with this team; we need time to develop our team play.
"Now we could have had the time for it, but now Marco Reus is injured. Of course we've got Shinji Kagawa as well, but he hasn't played with the team yet.
"Everything is far from perfect, but we've got to stabilise our game while we collect results. Most likely we have to do that with a new player in the starting lineup who will have to reclaim his self-assurance as well.
"That will be hard. When Ciro came back, he seemed very relaxed, I think he was very glad his injury wasn't as bad as feared. The bruise hurts a lot at the beginning, but it has quite fast."