Walker is one of my favourite players so I had to do his SBC. All his attributes are brilliant and you can play him has a fullback or centerback. Ingame he is faster than every single card that you'll ever play against, so I recommend you just put a sentinel on him. His links are amazing, with the likes of Dias TOTS, Cancelo TOTS and many more. For around 300k I think this card is an absolute steal, and if you want fodder for him you should do some icon swaps packs.
Light on the ball
Good going forward