Newcastle United boss Eddie Howe hopes to buy in the January market.
Howe also insists Bruno Guimaraes isn't for sale.
He said: "Short term there would be a need to bring people in given the numbers, but we'll assess as the month goes on as by the end of January we hope to have some big players back.
"[Possible incomings?] It's something we're working on behind the scenes. There's a lot of work that's gone on, that'll never stop regardless of how active you are in the market."
On PSG links for Guimaraes, Howe added: "When you are talking about your best players you want to keep them at the football club as long as possible so that is certainly our aim."
