Juventus striker Cristiano Ronaldo is ready to play in the Euro 2020 qualifiers for Lithuania and Luxembourg, coach Fernando Santos said on Wednesday, despite concerns over his fitness that appeared to be affected at the weekend.

Ronaldo was replaced in the 55th minute when Juventus beat AC Milan in Serie A on Sunday, the first time he has been replaced early since joining the Italian champions.

Anger at coach Maurizio Sarri appeared unconfirmed and made his way straight into the players' tunnel.

Sari said after the game that Ronaldo had been dealing with a knee injury since last month without missing a game and also dealing with injuries to the thigh and calf.

However, Santos said there was no problem with Portugal's most competitive players of all time and the most goalscoring (95 international goals), and the 100 club could play in Lithuania and Luxembourg.

Portugal will secure a place in the continental finals if they beat Lithuania and Serbia fail to beat Luxembourg.

"If he wasn't ready, we wouldn't have called him up," he told a news conference ahead of tomorrow's game against Lithuania. "Everyone wants to talk and raise speculation about Cristiano Ronaldo because he is the best player in the world. ".