Valencia has missed much of the season so far with injury, but he seems to have recovered from an ankle injury he picked up in a match against Everton on November 7.
The Ecuadorian’s return to action will be a big boost for West Ham, as they have so many players on the treatment table.
"On the positive side, Enner Valencia, who has been out since early November, is training with us now and could be involved tomorrow against Stoke,” Bilic said.
West Ham have a number of their key players out with injury at the moment, with many of their attacking stars set for lengthy absences.
Dimitri Payet, Victor Moses and Diafra Sakho are all sidelined and there were fears that Manuel Lanzini could also be ruled out until the new year.
However, Bilic says that he is hopeful that the Argentine could make a quicker recovery than first predicted.
"As for Manuel Lanzini, I am hoping he won’t be out for as long as we thought," the Croatian boss added.
If Lanzini does return early from his injury that will be a huge boost for the Hammers, who have struggled since their injury crisis hit.
West Ham have not won any of their last five matches, and they face an in-form Stoke City side this weekend.