West Ham boss David Moyes admits they've had a difficult summer market.
The Hammers have only added goalkeeper Alphonse Areola on a season-long loan and completed a permanent deal for defender Craig Dawson so far this summer.
"We are trying to add to the squad if we can," said Moyes. "We've had and we've got some offers in for people but not everything is coming to fruition. We'll do our best to add to the squad before the close of the window.
"It has been a difficult window because the market in general is very quiet. There has been money spent at the top end but it has been quiet overall.
"We hope to add to it. I don't think West Ham supporters are frustrated, I think they're realising how good the team has been."