Ian Lawlor, Jack Senior, Jamie Sterry, Richard Wood, George Broadbent and Joe Ironside have all joined since the end of last season. However, there is still a long way to go until the 2023/24 campaign kicks off and there may still be more additions.
Here are 11 players out of contract this summer Doncaster may be interested in.
1. Tennai Watson
The wing-back is leaving MK Dons upon the expiry of his deal. Photo: Pete Norton/Getty Images
2. Arthur Gnahoua
The 31-year-old has spent the last two seasons in the third tier. Photo: Pete Norton/Getty Images
3. Billy Chadwick
The forward was unable to establish himself in the Hull City first-team but has a lot more to give at just 23. Photo: Oli Scarff - Pool/Getty Images
4. Beryly Lubala
Lubala impressed at League Two level for Crawley Town. Photo: Pete Norton/Getty Images