That move should wrap it up.
In goal we have Alisson and Kelleher as back up.
In CB defense we have VVD, Konate and as back-ups Kabak/Matip/Phillips/Gomez, two of them are expendable though I'd keep Matip and Gomez and let Phillips and Kabak walk.
RB/LB are set with TAA and Robbo, Milner can always jump in as well as Tsimikas.
In midfield we have Thiago, Hendo, Fab, Keita, Jones, Ox and Milner. Plenty enough.
In offense we have our front 4 plus Shaq, Origi and Minamino.
Plus we still have some young guns that could make it to the first team!
I don't see a weakness in our squad, of course considering that we cannot use cheat modes like City or PSG, so that we cannot make sure we can cope with more than 1-2 key injuries. Far more important will be that Jürgen self-scouts his system. IMO we need to shoot more from around the box instead of always trying tiki-taka which fails 9/10, and we need a striker that can convert crosses into headers.