West Ham manager Gianfranco Zola is facing an anxious wait to discover whether Luis Boa Morte's knee injury threatens to rule him out for the start of the season.
The Portuguese winger went to hospital on Wednesday after being carried off early in West Ham's Barclays Asia Trophy clash with Tottenham following a challenge with Benoit Assou-Ekotto.
"We are still waiting," said Zola. "He has gone to the hospital for a scan but we are waiting for further news. I did not see what happened. We know it is his knee but that is all I can say."
Boa Morte featured in more than 30 games for West Ham last season as they secured a ninth-place finish in the Premier League.
To lose the 31-year-old would be a blow for Zola but the former Chelsea player remains hopeful the injury is not serious.
"It is a big blow for me," added the Italian. "He is an important player both on the pitch and off the pitch.
"Hopefully it is not too bad as he is a vital player for us."
Boa Morte was taken off in the 14th minute and West Ham never really got into the game after that as Jermain Defoe's late strike was enough to secure victory for Harry Redknapp's side at Beijing's Workers Stadium.
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