
Arp will move to Munich, either this June or at the end of next season, in a deal reportedly worth 2.5 million euros, but he wants to first help Hamburg reclaim their top-flight status.
“The decision when he leaves Hamburg doesn’t only affect Arp,” said Bayern in a statement, who have said they are “flexible”.
Arp made headlines in Germany as a 17-year-old after scoring two goals in his first three Bundesliga games in late 2017.
The 19-year-old will join Bayern as back-up to top-scoring striker Robert Lewandowski.
“The discussions with Bayern Munich were constructive and fair,” said Hamburg’s sports director Ralf Becker.
“Our relegation (last season) hit Jann-Fiete hard, he insisted on staying and helping us to go back up first.”