The former Germany goalkeeper believes the Hoffenheim custodian has been let down by his coaches and has been used as a scapegoat for the club's poor results this season
Former Bayern Munich goalkeeper Kahn believes that Wiese has been unfairly singled out for Hoffenheim's poor performances this season, and he admitted that shot-stoppers are generally not treated well if they are not always at their best.
"In difficult times you need to isolate the goalkeeper position and give interviews to build their confidence. To quarrel brings nothing," he told Bild.
"The goalkeeping job has never been fair. One would wish Tim Wiese to accept this challenge and emerge from this situation stronger than before. Because in football, it goes on and on."
Marko Kurz's side are currently in the relegation zone in Bundesliga having conceded more goals than any other side, and Kahn believes the coach should have shown more faith in the former Werder Bremen man.
He added: "Marco Kurz and [sporting director] Andreas Muller claimed that they would protect the people of the area by fighting relegation but it looks like they are doing the exact opposite.
"Especially in situations where you stand as a player under attack and have low morale, you need the special support and trust of coaches and club."