If he refuses to give you any quests you may have to talk to the guy in haven who suggests you seek him out. It doesn't offer any sort of quest but it may actually be a flag or something.
The Old "Switcheroo" is probably the easiest quest to do for Qeynos faction if you have invis (and maybe even if you don't).
Go to West Freeport by way of the Sprawl/Serpent Sewers/Thieve's Way.
Behind the Coalition of Tradesfolk is an instance called the "Factory". Simply go in there, invis, then click on every clipboard at every tradeskill station. (6 per level, 4 levels = 24 clipboards). Only the bottom floor has mobs that can see invis...if you're crafty you an click without aggro'ing but even if you do they're easy mobs to kill.
When you're finished, come out to WFP again. There's a little amphitheather thing in front of the Coalition. Jump into the center column and it will zone you right to the Commonlands.
Was in Nek, so decided to stop by and cause a little Havoc in Freeport-- was VERY surprised that these relatively low level quests delivered a nice (1.5 to 2% exp pulse at level 27)