Walker is a decent player, nothing more. More capable than Clyne but there isn't much in it. There's no justifying that fee for a full back. It's crazy.
It's easily justified actually. Outside of the fact that since last season your average transfer has sky-rocketed there are a ton of other factors.
First of all they are buying from a direct rival which is almost enough in and of itself.
Second as mentioned good fullbacks are scarce and Walker at the very least has been the best RB in the league ( I think the best in the league, but I am a Spurs fan so bound to be at least a little bias there) so it ups the price again.
Third it is a position that is widely known to be a huge need for City, one of the most glaring decifencies in their team and they had already missed out on their top target Alves.
Fourth, they need home-grown players and ones that can actually contribute. Not ones like Rodwell and shit who are literally there for the sole purpose of filling their quota.
Fifth, they are known to be stacked with money and able to find more at a whim through a new "sponsorship".
Lastly, despite the stadium, we don't need to sell. I'm sure it will be nice to fund our transfers with a sale and stick whatever budget we had for them on a loan instead, it's not like if we don't sell we won't be able to afford it.
This is a bad transfer for City because no fullback who has played under Poch has been as good once they left as they were under him. The season Poch came in Rose was hated by most of our fans, genuinely hated. Now he is easily the best left back in the league. I'd say the chance of Walker maintaining his level at City is very low and I hope that doesn't come back to bite me lol.