Enner Valencia has taken to Instagram to update West Ham fans on his injury.
The striker was stretchered off against Astra Giurgiu in the Europa League last week.
It had been reported by The Mirror that he was due for a scan on his injured ankle and knee, and could be out until December.
And while there is no official projection of a return date from the club, Valencia's update offers hope the injury is not as serious as feared, with no surgery required.
He wrote: "I would like to thank everyone for the support and the affection shown on This difficult moment.Thanks God, today I received great news as I will not need surgery, all the best!#COYI
"I would like to thank everyone for the support and love shown in this difficult situation. Thank God, today I received the good news that I will not have to operate me. Greetings to all !"
Valencia remains highly unlikely to figure in West Ham's Premier League opener against Arsenal, and even the first month of the season.
A prompt return would alleviate pressure for the Hammers to sign another striker, with Andy Carroll also out injured.
Valencia is into his second season at West Ham, after signing for the club last summer. The 25-year-old scored four Premier League goals for the club in 2014/15.