The Lord of Blackrock (Horde quest turn in)

Hello, I recently turned in the Nefarian head to Thrall in Orgrimmar and he then give me another quest to talk to High Overlord Saurfang in the Valley of Strength. Sadly I cannot open a dialogue box with High Overlord Saurfang to turn in the quest.

Greetings. The npc has been respawned and you can talk to him now.

thank you kind sir!