What happened: The Portuguese Football Federation issued a provisional suspension on 9 October after Ronaldo walked out of September's Nations League camp. He was an unused substitute against Norway and left after learning he would not start against Denmark. The federation marked the case as urgent.

Why it matters: Ronaldo is Portugal's captain with 146 goals in 234 appearances, both men's world records, and has said he will continue pursuing 1,000 career goals. His exit followed scrutiny of his starting role after Portugal's summer World Cup elimination by Spain. FPF rules allow a one-to-six-month ban plus a fine for walking out on international duty.

What to watch: The disciplinary commission will determine the length of any ban. Attention turns to whether coach Jorge Jesus recalls Ronaldo for November against Denmark.