When you think of Arsenal in their prime, they always had men (some hard-knocks too) in their squad.
Viera, Bergkamp, Pires, Adams, Keown, Toure, Silva, Parlour, Campbell, even Henry to some extent.
They have a lot of talent in their team, no doubt about that, but they're very young and immature. Apart from Cech, Koscielny and Sanchez I'm struggling to think of anyone with any presence about them. Maybe Mustafi?
It's never been Wenger's policy but he could do with getting in a couple of wise old heads.