Paul Clement is keeping fingers crossed over Wilfried Bony after the striker lasted only 45 minutes of Swansea City’s defeat at West Ham.
Bony made his second Premier League start after returning to Wales from Manchester City on deadline day.
The Ivory Coast frontman came closest to scoring for the Swans in a game of few chances at either end, with his well-struck drive forcing a decent save from Joe Hart.
But Bony was withdrawn at half-time amid concerns over a hamstring problem.
“It was an injury concern, but I don’t know it was just tightness or something more serious,” Clement said.
“It was his hamstring. Wilfried didn’t feel comfortable when he was stretching.
“But I don’t know if there is a problem. Hopefully it’s nothing too serious.”
The Swans now have a two-week break before they return to action against Huddersfield Town.