None of these other players can do what Jack does. That's the point.
Anyway Southgate is a fanny so it's fine. If I was wilshere, I'd get a good pre season and get back into best form like Vs Barca 2011 and then when next round of international come around, wait for Southgate to call him up (if he's even in charge then) and then tell him to fuk off big nose.