Stoke City's Australia international defender Harry Souttar is facing a potentially long injury lay-off after suffering a knee injury.
The 23-year-old 6 ft 6 in centre-back had to be stretchered off late on in Australia's 0-0 World Cup qualifier against Saudi Arabia in Sydney.
"It's a big blow for us. I'm really down and devastated for Harry," Australia manager Graham Arnold said.
Souttar has made 63 Stoke appearances under boss Michael O'Neill.
After joining from Dundee United in 2017, he was brought in to the side by O'Neill last season, following loans over the previous three campaigns at Ross County and Fleetwood Town.