How can I buy Hjerim Manor in Windhelm when I've sided with the Imperials?

Ok so, I have a problem where I want to buy the manor in Windhelm. I have done the mission 'Blood on the Ice' to start to be able to get it but to fully be able to purchase it I also have to do the civil war mission for the Stormcloaks (Rescue from Fort Neugrad). The problem is that I'm the Thane of Whiterun and have sided with the Imperials so it won't let me do the mission... is there any way I can buy the manor?


Completing the Civil War questline for the Imperials will cause a new Jarl, Brunwulf Free-Winter, to be appointed in Windhelm. Once this happens, you will be able to purchase Hjerim from him.