Borussia Dortmund CEO Hans-Joachim Watzke has warned against premature expectations of a title challenge while promising new boss Lucien Favre time to rebuild.
Former Nice head coach Favre fronted his first media conference on Friday following his appointment on a two-year contract in May.
BVB initially identified the experienced Swiss as their preferred candidate 12 months ago and finally landed their man after a tumultuous season saw the sacking of Peter Bosz and departure of successor Peter Stoger.
Watzke insisted it would "certainly take more than one transfer period" for Favre to return the club to the heights of their back-to-back Bundesliga glories in 2011 and 2012.