Newcastle United boss Alan Pardew is concerned about their inability to compete in the transfer market.
Only Loic Remy has arrived on-loan from QPR so far this summer.
"We just can't compete with Manchester City, Manchester United, Chelsea and Arsenal in the Champions League positions with that extra revenue and everything else," Pardew insisted.
"It's beginning to be a bit of a concern, the gap they're opening up to the rest of the Premier League.
"Financial Fair Play was meant to even things out a little bit, but it doesn't seem to have had any impact at all.
"We can only try to improve with what we have. I do think we will do some business before the window shuts, so perhaps it's a bit more lopsided as things stand.
"We have invested in the team and believe there is good depth to the squad, but I think the offensive players turn draws into wins and are very important to the Premier League."
