David Moyes says there "is a chance" West Ham will be active on deadline day.
The manager brought in striker Danny Ings earlier this month, only to see him injured in his debut and sidelined for a number of weeks. Kurt Zouma is another out for indefinite spells.
Moyes notes that West Ham "spent all our money in the summer" but accepts the club may need to act, telling reporters: "If both were fit, we wouldn't need anyone but we are a little bit short.
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"It is a difficult decision, whether to try and do something quickly. I'm not completely ruling it out. There is a chance."
Michail Antonio has been frustrated at a slightly diminished role this season, though scored on Monday in the FA Cup, and claimed on his The Footballer’s Football Podcast that he has held talks over a possible exit this month.
But Moyes has ruled out a January exit for the striker, adding: "I would say there is no chance.
"Money talks in football but there is no price we are interested in taking for Mich."