Manchester United boss Jose Mourinho should be imprisoned over his treatment of Bastian Schweinsteiger, according to a member of world players' union FifPro.
The former Germany international has been forced to train with the reserves and not featured in a pre-season game since the arrival of the former Chelsea manager.
Schweinsteiger was not involved in the Wayne Rooney's testimonial on Wednesday, a game in which Jose Mourinho used 22 of his squad.
Dejan Stefanovic, a lawyer and FifPro member from Slovenia, told BBC World Service Sport: "It's clear bullying. In Slovenia, we would have indicted Mourinho and asked for the highest penalty - three years in prison.
"This is clearly meant to discourage Bastian. Mourinho is setting a bad example. I would take it to the ordinary court.
"In our case, the penal code is quite clear. If there is bullying and harassment, there's a prison sanction, a maximum of three years in prison.
"Schweinsteiger should turn to the Professional Footballers' Association and he should file a complaint and I would also seek penalty for Mourinho.
"All the players of the first team have to train with the coaches of the first team at the same place, at the same time as all other team-mates.
"That's something that should be applied to each and every club and should be written within FIFA regulations."
Manchester United have declined to comment.