So, basically he wants exactly the same as what both Klopp and Tuchel want from wide players? This adaption issue would be understandable if he would not have come from systems where exactly that was required, but due to the extremely high positioning of the FBs in any system Dortmund used for years, the wide players were always required to carry a lot of defensive work load and running work. That is why players like Perisic did not make it for us or why Tuchel wanted Schürrle (who fits this criteria extremely well) as Mkhitaryan´s successor.
It strikes me as very odd, that the areas Mkhitaryan appearantly has to catch up on are intensity and off the ball work/movement of all things. He was in that regard one of the best players to ever play for us and is your best player by a country mile.
If you would have asked me before this season what kind of problems Mkhitaryan could have run into, this would have been the very last thing on my list.