纳格尔斯曼：哈弗茨伤情有所反复，但预计年底前能够复出（纳帅：哈弗茨伤势出现反复，预计年内回归）

Considering user's query

The user posted a Chinese sentence about Nagelsmann discussing Havertz's injury. They might be looking for a summary, a translation, or some extra context. Without a clear request, I should keep my response friendly and concise. I think it's best to provide the English translation and a brief contextual note without making assumptions. I might also want to ask if they need anything specific, like a summary or more details, while avoiding to fabricate any information.