Haye should (and needs to) fight Alexander Povetkin who at 6'6 ish and the same upright Eastern Block style as Wlad would surely be the perfect tune up.
Haye would be a fool to himself if he thinks he can just jump up to Wlad after Barret,maybe it'll turn out he just sparks Wlad cold but he should go in armed to the teeth and get as much experience of fighting bigger,robotic Heavies as he can pre Wlad!
What's the rush he's only 27 and i told him this the other week!