Hummels talks about being a commentator: he will make criticism within the appropriate scope, and he will definitely not discuss off-site topics

Dortmund and Bayern legend Hummels found a job as a commentator after retired this summer. Before the start of the new Champions League, Hummels talked about the new job on the show.
Hummels: "I will definitely be more restrained in terms of words than before, especially when it comes to former teammates. Of course I will perform my duties and make criticisms, but I will make sure everything remains within the right scope."
"I know the players very well and know that some things are sometimes over-amplified. So I want to just talk about football itself. I want to discuss the game, not the irrelevant things, what is really happening on the court. As for the various topics off the court, I certainly won't talk about it."
source:kết quả tỷ số 7m