Paul Dickov says he is waiting on several call backs after planting the seeds of his summer squad rebuild.
The Scot’s hands have been tied during ongoing takeover negotiations involving John Ryan and One Direction star Louis Tomlinson.
With co-owners Terry Bramall and Dick Watson ready to sell their stakes in the club, Rovers are not in a position to sanction new playing contracts during the current state of ownership flux.
But Dickov has moved to reassure fans that he is busy laying the foundations ahead of potentially busy summer.
“We’ve got a lot of irons in the fire,” Dickov said.
“My staff and I like to keep things under the radar and keep things quiet.
“I’m not one for announcing names or positions or clubs because I think it can come back and bite you on the bum a little bit.
“What we are doing is working ever so hard. Hopefully, before we start back on June 30, we’ll have a few players in place by then.
“When you’re talking to agents and players, it’s never completely in your control until they’ve signed,” he added.
“But what we are doing is identifying targets, as we did all throughout last season and sitting down and talking to them.
“A lot of players are on holiday so we’ll have to wait for some answers.”
Doncaster have 13 players under contract for next season.
Eight more players whose contracts are due to expire on June 30, including James Coppinger, David Cotterill and Ross Turnbull, will be offered new deals to remain at the Keepmoat Stadium.
Should they all agree terms, and the club manage to hold onto the likes of Richie Wellens, Paul Quinn and James Husband, that would give Dickov a solid base to work from.
In that case, Rovers’ boss is likely to go for quality over quantity this summer, with the spine of the side likely to be at the forefront of his thoughts.