Chelsea goalkeeper Thibaut Courtois and his father have launched legal action against former Belgium boss Marc Wilmots.
The 25-year-old has been left furious by claims from Wilmot that his father, Thierry, had leaked team selections during the 2016 European Championship.
Courtois said on Instagram: "Mr Wilmots - not for the first time - reiterates publicly and intentionally (makes) accusations against my honour and my reputation."
He added: "As well as my father, we decided together to file a complaint accompanied by criminal indemnification proceedings for libel and defamation."
Wilmots was Belgium boss from 2012 to 2016.