How does Walker offer the same thing as TAA and Trippier?
Except that Walker is literally used in the same role against the likes of Mbappé, Vinicius and other high-profile left wingers with whom he can often deal with due to his insane athleticism. Why would you need another specialist on nullifying a high-profile left winger when you already have a better one?
Walker and Reece James are more similar to me.
Walker is good defensively in a City team that arguably use 3 CB's including one at LB.
AWB is better at shutting down a LW than any of those.
I've seen it against Mbappe, Salah (whilst playing LB), Son, Mitoma, Diaz, Richarlison, Zaha, Saint Maximin, Gordon, Werner, Doku, Neto etc
He is the best 1v1 defender in the world.
Just because Walker is good defensively in a very possesion heavy team alongside playing with 3 other CB's and arguably the best CDM in the world doesn't change what AWB is.
He is a specialist and something I'd have in my locker if i was an England manager that I'd only pick when a whole teams attacking output is primarily coming through one player on the LW:
Mbappe at PSG & for France
Son at Tottenham
Ronaldo at United & Portugal
Neymar for Brazil
Just for examples.
I'd personally
1) sell Malacia
2) Keep Dalot, AWB + look for a young RB aka not frimpong.
3) Buy a new WC/near WC Left Back.
4) Bring Amass in to the first team
5) Shaw as back up LB & LCB
3 RB's + 3 LB - 2 older (awb &shaw), 2 younger(Amass + young RB) & Class players (Dalot + WC LB)
Dalot is brilliantly ambidextrous aswell to cover for Shaw's injury prone record.
I'd honestly ask him to stop chewing gum and even get his hair cut to improve his stamina (ie his jog backs). Chewing gum is an exercise just as much as playing football on a pitch.