The Argentine midfielder has spent the majority of the last eight weeks on the sidelines with injuries to his shoulder and hamstring.
However, he has returned to training and manager Steve Clarke has hinted that he could be included in the squad to face the Toffees.
"He's been out nearly eight weeks now with the exception of a little 30-minute cameo at the start against Villa," Clarke is quoted as saying by the Express & Star. "But Claudio's back in training and the shoulder and hamstring are fine.
"It's good to see the group training because there are a few faces we haven't seen for some time."
Yacob, 25, joined the Baggies on a free transfer during the summer.