I wanted him in a few weeks ago. Walker has been making a lot of uncharacteristic mistakes for weeks now. He clearly needs a rest as he's played and awful lot of football over the last two years. I think both mentally and physically he needs that rest too.
Danillo is a very under rated right back. He is certainly not a left back though, my word he was shite there.
Hopefully he can stay fit and share the burden with Walker after Walker has the break he needs. I still see Danillo as second choice right back, and still as best 2nd choice in the league, but Walker fit and on form is still better (and always will be until his pace goes).