The Millers put a bid in for the 23 year old, and it looks to have been accepted with the Toon also having a 50% sell on fee on any future sale.
Speaking after todays game away at Newport, where Barlaser was not in the squad, Bruce said; "There is something imminent towards Rotherham. I wish him the best of luck, I hope it goes well. He needs to go and play football. It would be wrong for me to put him back with the academy now."
"I didn't want to stand in his way. There is a deal to be done."