England winger Immanuel Feyi-Waboso should be fit to feature in next month's Nations Championship after a scan on a hamstring injury revealed a positive prognosis.
The 23-year-old came off 15 minutes into the second half of Exeter's 34-28 Prem win over Newcastle on Sunday.
Feyi-Waboso missed this year's Six Nations after hurting his hamstring in January but had started every league game for Exeter this season - although he will be absent for Sunday's European Champions Cup trip to French champions Toulouse.
He was a key part of all three of England's Nations Championship games over the summer and crossed for tries against Fiji and Argentina.
"How he's reporting on it post-game and yesterday [Tuesday] there's nothing I'm hearing from our physios saying there should be a long-term issue," Exeter director of rugby Rob Baxter told BBC Sport.
"Had a scan, he's got some awareness there.
"The scan doesn't show up too much. It's one of those things, scans tend to always show something, but actually on testing he's very good.
"So we're hopeful that we can kind of almost treat the symptoms he's showing and see where he gets to over the next week or so."
As a centrally-contracted England player the national team has the final say over Feyi-Waboso's treatment.
He has been assessed by an England physio with Steve Borthwick's side due to play the first of their final three nations Championship games against Australia at Twickenham's Allianz Stadium on 8 November.
"We're in a delicate time for both parties aren't we, it's delicate time for us and a delicate time for England," added Baxter.
"We're desperate for Manny to play because we've got some important games and England want him to be able to feature in the autumn.
"Hopefully there won't be any dispute based on we'll just work on where Manny functionally is, how he feels he is and we'll take it that way."
Exeter 'stretched' in backs division
Feyi-Waboso's injury could not have come at a worse time for Exeter.
The Chiefs are without all four of their first-choice options on the wing for the trip to Toulouse with the England winger joining Campbell Ridl, Olly Woodburn and Paul Brown-Bampoe in the treatment room.
Tommy Wyatt played on the left wing against Newcastle while Ben Hammersley came on to replace Feyi-Waboso on the right, with Sam Harris making his first Prem start for Exeter at full-back.
"We are a little stretched there, but then we've still got guys who've got Premiership experience," said Baxter.
"Tommy Wyatt, Ben Hammersley, obviously Sam Harris has played some rugby for us now, so we've still got some options.
"Zack Wimbush we've utilised on the wing before, Nick Lilley has played Premiership rugby on the wing before, so although they wouldn't be classed as out and out wingers, we have had a few guys who we've deployed on the wing."