Bayern München CEO Karl-Heinz Rummenigge has told the German Football Association (DFB) not to meddle with Jerome Boateng's rehabilitation.
The 27-year-old defender is expected to be sidelined for a lengthy spell after sustaining a groin injury in Bayern's 2-1 win at Hamburg on Friday.
His participation at Euro 2016 has been cast into doubt, although Germany coach Joachim Low revealed on Monday he would give Boateng every chance to prove his fitness ahead of the final squad announcement on May 31.
Rummenigge, though, will not bow down to the DBF again, with Low's side having lost Bastian Schweinsteiger and Mario Gotze to long-term injuries whilst on international duty in recent years.
The 60-year-old warned German football's governing body "to clearly back off otherwise they will run into trouble with FC Bayern.
"But all I hear in the Boateng discussion is DFB, DFB, European Championships," he told reporters on Tuesday.
"It's about time that the players are no longer worn thin in the DFB, UEFA and FIFA environment. The workload needs to be decreased."