Arsenal can only afford to loan players during the January transfer window and cannot make permanent signings, says manager Unai Emery.
The Gunners, who signed five first-team players in the summer window, have been strongly linked with a move for Barcelona midfielder Denis Suarez.
"I don't know now his [Suarez's] situation but we can only sign on a loan," Emery said.
"We cannot sign permanently. We can only loan players."
- Juventus favourites to sign Ramsey but Arsenal man yet to make final decision
- Thursday's updated gossip column
Arsenal spent around £70m on four players last summer - Lucas Torreira, Matteo Guendouzi, Sokratis and Bernd Leno with Stephan Lichtsteiner also arriving on a free transfer - and signed striker Pierre-Emerick Aubameyang for a club record £56m in January 2018.