The Swede says they cannot afford to slack of this season.
"It's important to see the club going in the right direction and progressing every year," he told the WBA website. "We've done so for the last three or four years.
"It is easier to attract players. We have to keep with the model we have been using, strengthening the team every season, keeping the players we have.
"That is the key element that has made us come this far, that we have kept the squad intact.
"Every year we sharpen the competition and the quality of the team.
"We need to keep building on that."