Ivanovic is seriously overrated makes lots of errors when playing central. Thats why hes always put at RB hes a last resort at CB.
I'm a big fan of Mertesacker but im also worried about his 2 ankle reconstructions. It is normal for a 3rd reconstruction to end a playing career. Most worryingly was that it didn't "go" in a tackle. Looked like cronic (straw that breaks the camels back) type of injury. Which means the cause hadn't been resolved.
He could be fine we did finally seem to get a decent physio in at the start of this season. Suppose we have to give Per the benefit of the doubt although its awfully tempting to go for Vert now.