West Ham co-chairman David Sullivan expects to spend up to £30m on a "top striker" this summer.
"We have done well with our signings and we hope we can sign a few more this summer who will do equally as well or better," Sullivan told the club's official website.
"We know that we need a top striker which is the hardest thing to sign. We need a 20-goal-a-season striker and that will cost us £25m or £30m. That is where the bulk of the money goes."
Source: transfermarketweb.com