Roberto Martinez expressed hope that midfielder Bryan Oviedo will be available for the club this weekend as he recovers from an illness.
Bryan Oveido became the third Everton player in the past week to come down with a chest infection as the flu bug sweeps through the club.
Bryan Oviedo picked up a knock on Tuesday at Villa Park and the Everton defender will face a late fitness test.
It was not Everton's day at Goodison Park as the Toffees failed to score in a 1-0 loss to West Brom despite taking 34 shots on goal.
Bryan Oviedo has taken to social media to provide an update after the Everton full-back was injured during the dramatic draw at Stamford Bridge on Saturday: "Do not worry, I'm fine it was just for caution."
Everton defender Bryan Oviedo is set for another spell on the sideline in his injury-plagued season after being ruled out for two to three weeks with a hamstring injury.
The Everton defense has been hit with more injury news after Roberto Martinez revealed Bryan Oviedo will have a scan on his hamstring to determine the extent of the injury.
Bryan Oviedo looked to have picked up a hamstring injury midway through the first half of Everton's match with Sunderland, and had to make an early exit.
Bryan Oviedo has withdrawn from the Costa Rica squad for the upcoming friendly matches against Brazil and Uruguay.
Roberto Martinez decided to use Everton's tune up with Leeds United to test some of his younger prospects, especially in defense, but the Toffees would lose the match 2-0 to.
The unfortunate Bryan Oviedo has been ruled out for at least 2-months following a freak training ground injury on the eve of his comeback.
Absent since February with a hamstring strain, Bryan Oviedo is set to return soon as Roberto Martinez targets "the start of May" for the left back.
Roberto Martinez revealed that left back Bryan Oviedo has felt a strain in his hamstring during training, putting his availability for Everton's match against Southampton on Sunday in question.
Bryan Oviedo got a surprise start as Leighton Baines was kept out the squad with a knee injury that was not revealed during the buildup to the match.