Bayern Munich president Karl-Heinz Rummenigge expressed shock over Bastian Schweinsteiger’s situation at Manchester United.
Schweinsteiger, 32, is reportedly training with United’s reserves after being told he does not feature in new manager Jose Mourinho’s plans.
He was not among the 22 players used by Mourinho in Wayne Rooney’s testimonial match on Wednesday.
Rummenigge told the Bild newspaper: “I could hardly believe it. One or two players are going to think long and hard in future about whether they want to go to such a club.
“Nothing like that has ever happened at Bayern Munich.”
Ottmar Hitzfeld, who gave Schweinsteiger his professional debut at the age of 18 and won the Bundesliga with him in 2003, has also condemned the situation.
“It’s a lack of respect for a worthy player,” he told the RedaktionsNetwork Deutschland. “It’s a method which is strange to me.
“Schweinsteiger is a key player, a world champion, a personality, while at the same time he has an exceptional attitude.”
Former Germany captain Schweinsteiger recently another retirement from the national team after starring at Euro 2016 in France.