McCann currently has 28 players contracted for the 2023/24 campaign and wants to make at least one more addition to his squad before the transfer window closes on 1 September.
But he may need to start offloading those on the fringes to make way for new recruits.
The returning Rovers chief previously said he wanted a squad of around 23 players.
With that in mind, here’s a look at which players could leave Doncaster this summer.
9. Tavonga Kuleya
Kuleya made a handful of appearances last term but there are several senior players ahead of him out wide. Photo: Howard Roe/AHPIX LTD
10. Jack Goodman
Another promising academy graduate, a loan move may help bridge the gap between youth football and League Two for striker Goodman. Photo: Howard Roe/AHPIX LTD
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