Bayern Munich are set to make an official complaint to Uefa and are considering legal action against the Dutch football federation (KNVB) after Mark van Bommel returned injured.
The reigning Bundesliga champions, who are severely struggling in the defence of their title, asked for the midfielder not to play in Tuesday's Euro 2012 qualifier against Sweden.
Bayern made the request because Van Bommel sustained a knee injury in Friday's match against Moldova, but Holland boss Bert van Marwijk still played his son-in-law for 70 minutes versus Sweden.
"Mark van Bommel returned to Munich this Wednesday...he was examined by the club's doctor, Hans-Wilhelm Muller-Wohlfahrt, who noticed the injuries," the German club said in a statement.
According to Bayern, Van Bommel has torn tissue and bruised his right knee, requiring "complete rest" for the next five days followed by a further five days of recovery.
"He will therefore be missing at least for the Bundesliga game against Hanover (on Saturday) and the Champions League tie with Cluj (the following Tuesday)," Bayern stated.
Bayern "is going to make Uefa aware of this affair in the coming days and is keeping open the possibility of legal action against the KNVB," the statement warned.
Meanwhile, Bayern suffered another blow as it was announced that Germany striker Miroslav Klose will miss the next two matches with a left thigh injury.
The 32-year-old took his international goals tally to 58 in 105 matches when he scored in the Euro 2012 qualifying victory over Kazakhstan on Tuesday, but he has also returned with fitness problem.
Bayern are already without star Dutch winger Arjen Robben, who was Bundesliga player of the season in 2009/10, and French playmaker Franck Ribery due to injury.