West Ham boss David Moyes is hoping key forward Jarrod Bowen will be fit to return for Thursday's Europa League quarter-final second leg against Bayer Leverkusen at London Stadium.
Bowen, 27, missed the 2-0 first-leg defeat and last week's Premier League match with Fulham with a hip injury.
The England international, who has 19 goals in all competitions this season, returned to training on Wednesday.
"It was great to see Jarrod out there," said Moyes.
"I would never risk a player if I thought they were injured but you always want your best players back in, your goalscorers as well, and Jarrod has been that this season.