Wiese is no longer able to train with his first-team colleagues after being kicked out by coach Marco Kurz following recent indiscipline, and his future at the club looks bleak.
However, he has received support from some of his fellow players who have criticised their club's stance.
"Tim has certainly made mistakes, but I don't think the way he is being treated is correct," said captain Sejad Salihovic to the Bild newspaper.
"He has achieved a lot and he is one of the best goalkeepers around."
Midfielder Tobias Weis says Tim's presence "is being missed" and that "the time has come for him to return to the team."
Wiese only joined Hoffenheim last summer, but soon fell into disfavour among the club's fans, who were unhappy to see him arrive in the first place to replace their favourite Tom Starke, who subsequently moved to Bayern Munich.
His place in the Hoffenheim goal has been taken by winter recruit Heurelho Gomes.