
The 33-year-old former Ajax and Borussia Dortmund winger, currently in his second spell at Goodison Park, suffered his latest injury in training and boss Roberto Martinez does not expect him to make the 8 August league opener against Watford.
"But it does seem it's a problem with his hamstring and clearly he's going to miss the start of the season, which is a real shame because Stevie worked with fantastic results and fantastic signs over the first three weeks of pre-season. We were very down about that situation and we hope to get Stevie back as soon as we can."