Hertha Berlin have said they will hold talks with Liverpool over the possibility of keeping midfielder Allan on loan for another season.
Wolfsburg striker Mario Gomez will wait until the end of the season before deciding his future.
Nagelsmann, 29, has transformed Hoffenheim's fortunes since taking charge of a side deep into the relegation zone in February 2016.
Your tweets are answered on John Terry's place in EPL history, Lewandowski's Ballon D'or hopes, and improved Prem coaches.
Alex Teixeira says he has held regular discussions with Bayern Munich forward and former Shakhtar Donetsk teammate Douglas Costa about life in China.
Schalke left-back Sead Kolasinac will decide this week whether to join Arsenal on a free transfer this summer, the player's father has said.