England forward Sam Simmonds is facing six months on the sidelines due to a serious knee injury, less than a year before the World Cup gets under way in Japan.

The Exeter back-row suffered anterior cruciate ligament damage and will have to undergo a lengthy period of rehabilitation following reconstructive surgery.

That will come as a blow both to club boss Rob Baxter and England counterpart Eddie Jones with 23-year-old Simmonds having scored five tries already this season before succumbing to injury during the Chiefs’ 28-11 Gallagher Premiership victory over Worcester at the weekend.

Director of rugby Baxter, who also revealed that Jonny Hill will be sidelined for up to 16 weeks by surgery for a finger ligament problem, said: “Sam Simmonds has ruptured his ACL. He’s going to go for a reconstruction, so that’s going to be six months onwards.”

That will rule Simmonds out of the Autumn internationals and the NatWest 6 Nations, although Baxter insists there could still be a silver lining for his emerging talent.

He said: “The only thing I can say to Sam with any certainty is, he’s a young player and the reality now – with all the talk of player welfare and the number of games you can play – the one thing is he’s not going to be playing any games for the next six months.

“Who knows what’s going to happen to the back-row resources between now and the World Cup? The other guys are going to be playing – they are the guys who are more likely to be picking up injuries than Sam.

Exeter’s Sam Simmonds is tackled by Wasps' Dan RobsonExeter’s Sam Simmonds is tackled by Wasps’ Dan Robson (David Davies/PA)

“Also, he’s a young guy – a six-month break now at this time in his career, he’s got a really good break now. He’s got an opportunity of getting really mentally and physically fresh for what might be a fantastic two or three years for him after this injury.

“Yes, he’s going to miss out on some big games now, but you’d hope that those big games can get added to the end of his career because he’s not taking the battering now.”

Meanwhile, England hooker Tom Youngs has expressed his sympathy for former team-mate Joe Marler after the Harlequins prop revealed following his retirement from international rugby that he had sometimes subconsciously sought yellow and red cards to avoid meeting up with the squad.

Youngs said: “If he is struggling with that sort of stuff, it’s not nice. I feel very sorry for him that he is.

Posted by Harlequins Rugby Union on Wednesday, September 26, 2018

“With him doing what he has done and retired, hopefully he won’t have to worry about it any more. If that means he leads a healthier life, then fair play to him. That is the most important thing.

“Fair play to him for standing up and saying he can’t do it as it shows the sign of a very tough man. You can’t see it as weakness as he understands his emotions and feelings.”