The Swiss manager would've struggled to imagine his new star signing making a better start to life in the Bundesliga
Lucien Favre called Erling Haaland "incredible" after the striker came off the bench to score a hat-trick against Augsburg on his Borussia Dortmund debut.
Inspired by Haaland, Dortmund rallied from 3-1 down to record a 5-3 away win on Saturday that will live long in the memory.
The Norway international came on for Lukasz Piszczek after 56 minutes and netted with his first touch 183 seconds later with a low shot into the far corner.