Middlesbrough are set to sign James Husband in a deal that could see striker Curtis Main move in the opposite direction.
Boro have agreed a £500,000 fee with Doncaster for the 20-year-old left back, while Main is mulling over a move to the Keepmoat Stadium.
Husband, who has played 64 times for Rovers, is also understood to have agreed personal terms with the Teessiders.
The highly rated defender’s move would see him link up with another former Doncaster left back, George Friend, who moved to the Riverside Stadium in 2012 following Rovers’ relegation from the Championship.
Hull City were linked with Husband earlier this summer and Barnsley were this week thought to be lining up an audacious bid, but Middlesbrough have pushed through a deal over the last 48 hours.
That deal now looks a formality - but one complicating factor could be Main’s decision whether to move in the opposite direction.
The 22-year-old striker is wanted by Rovers on a permanent deal but the Geordie forward is not rushing into a decision and talks behind the scenes are continuing.
Paul Dickov will be loathe to lose the highly-rated Husband but the receipt of such a transfer fee could signicantly loosen his pursestrings - if the money is re-invested in the squad.
Dickov had lined up a deal with former Arsenal left back Cedric Evina earlier this summer.