Totally agree, Mertersacker epitomises the mediocrity at this club, you need motivaters, coaches that know what they're doing and are hungry, no people who just going along with whatever someone else says.
Seems to me that the club doesn't listen to any external influences, if they did they'd realise what a shambles the defence is, they also would have never signed Luiz as a CB, years of him being a liabilty there should have been enough to put us off, clearly not though because it seems there's very little actual football knowledge at the club.