As far as I've heard from the media, Hummels also no longer wanted to stay at Dortmund. There were apparently problems between Terzic and Hummels, but at 35 he probably wouldn't be able to be in the starting eleven.
Nuri Sahin is now taking over the head coach position instead of Terzic, which will also be a big challenge for him. They need to make a few good transfers this summer, because Reus and Hummels were important players who are no longer there.
Yes, based on news reported from several sources, Hummels will indeed leave Dortmund as a free agent. This news has been confirmed and is on the @FabrizioRomano account.
Source: Mats Hummels says goodbye to Borussia Dortmund, leaving as free agent.He has been at Dortmund for 13 years. This is a very long time being in that squad. And Edin Terzic has also confirmed that their iconic CF will leave Dortmund as a free agent at the end of June. This is certainly quite a tough decision, however, they still honor him so much.
Hummels' departure from Dortmund is often linked to several Serie A or La Liga clubs. Some of them are AC Milan and also AS Roma.
Mat Hummels with all his dedications to Borussia Dortmund and how he gave his all in his 13 years at the club will definitely go down in the history book of the club as one of their greatest legends. The German defender has be a very passionate lover of Borussia Dortmund which made him reject so many offers over the years the only thing I find unpleasing was the timing if his announcement to leave the club. A player that represented the yellow and black jerseys of Borussia Dortmund like Hummels deserves an extraordinary sendoff from the club fans so he should've announced his departure before the end of last season so he could receive all the farewell receptions he deserves as a legend.
Since he announced his departure, a lot of clubs have been rumoured to be his next destination but none of these rumours have been confirmed by Hummels. Hopefully for him, he goes to club that'll help him win more trophies before he finally quits football