Having suffered relegation back to League One last season they now look set to lose their main striker to Championship side Millwall.
Tom Bradshaw netted on 12 times for the Tykes last season, but his goals could not save the Yorkshire club from the drop.
Millwall boss Neil Harris had said that he wanted to strengthen his attacking options in the transfer window and they are edging ever closer to signing Bradshaw.
Millwall relied heavily on Steve Morrison and Lee Gregory during last campaign, so Bradshaw will provide good squad cover as they mount another promotion push.
The 25 year old joined the Reds in 2016 from Walsall after the Saddlers failed to gain promotion to the Championship.
He joined Barnsley for an undisclosed fee after his transfer request was accepted by then Walsall boss Jon Whitney.
In his two year stint at Oakwell, Bradshaw has made 79 appearances for the club, finding the back of the net on 17 occasions.
He now has just one year left on his current contract with the club and Barnsley are now keen to cash in rather than losing him on a free next summer.