To add to Stevons reply, I wouldn't play a forward as a wingback, I also wouldn't attempt to shoehorn all my new signings into a team and, most importantly I wouldn't sign an inferior teams badly gash 3rd choice right back over two of Englands most promising right backs.
You know, obvious stuff.
As for 'the gaffer' knowing a lot about defenders and defensive tactics as a former defender...that's simply not true and has been shown to be the case that even interpreters like Mourinho can know far more than managers.
It's funny you mention 'an agenda' when the only person with an agenda here is YOU who doesn't want Jonjoe Kenny to see game time and when he does you'd be happy to see him play badly as you insinuate to be able to point fingers at EVERTONIANS>
Interestingly a lot of Americans liked your post....a nation whose main sport doesn't have a proper youth system.