And there's plenty of value to be found in the free agent market - with several international stars available to Premier League clubs for nothing.
Scroll down and click through the pages to view the 11 available free agents top-tier clubs could sign.
9. Joe Ledley
The Wales international has been without a club since leaving Derby County last January but has a wealth of experience. Photo: Alex Pantling
10. Wilfred Bony
The 30-year-old ex-Swansea City powerhouse has been previously linked with a move to Brighton. Photo: Clive Mason
11. Martin Olsson
The 31-year-old Sweden international left-back turned out for Blackburn, Norwich and Swansea in the Premier League - making him a decent option for clubs short on defenders Photo: Alex Pantling