Couple of useful insights into how they set up tactically during their best run of form last season:
http://outsideoftheboot.com/2013/12/08/borussia-dortmund-0-1-bayer-leverkusen-leverkusen-blunt-dortmund-attack-pick-crucial-points/...
Yep. My recollection of his Leverkusen side (saw them at Dortmund last season) was the likes of Son Heung-Min and Sidney Sam breaking away at a fair old speed and scoring plenty on the counter.
No idea what approach he'll take in the Championship though. It's the sort of thing we'll only know...