Scotland forward Jonny Gray is in serious danger of missing the Rugby World Cup after dislocating his kneecap.
Gray sustained the injury during Exeter’s 47-28 Heineken Champions Cup semi-final defeat by La Rochelle on Sunday.
“It’s relatively serious without being the worst it could be,” said Exeter rugby director Rob Baxter.
“It’s a patella tendon injury, he’s dislocated his kneecap.
“Fortunately the other major ligaments within the knee are all stable.
“It’s a relatively complex patella tendon injury, which is going to require surgery this week, and there’s a relatively long period of rehab
Second-row Gray, 29, has won 77 caps for Scotland and his absence from the World Cup in France would be a huge blow for Gregor Townsend’s side.
Scotland start their World Cup campaign against defending champions South Africa in Marseille on September 10.
Pool B also includes Six Nations Grand Slam champions Ireland, Romania and Tonga.
