We need 3-4 players long term, the same as most teams when you look at a collective aspiration across the league to develop and imporove.
At the moment the biggest requirements are all defensive. Lloris is fine for the time being, Sanchez will be fine if we can get him a top partner, Aurier has room to grow but he's on limited time to prove that.
Personally if I had one signing to make I would bring in a DM above all else. Let's get Lo Celso ties down to his bargain £27.5m fee in January and let's go all out for Zakaria to add a bit of muscle in there.
We get through to the end of the season with Aurier, Foyth & KWP as right back options, Davies, Rose & Vertonghen as RB options and Sanchez, Alderweireld, Vertonghen, Foyth and Dier as our CB options and we review things then.
It's a huge shame Dier and Wanyama seem to have faded drastically. Over the Xmas period I say we give Winks & Ndombele time to find its feet but if I could make one signing in Jan I'd probably go for Denis Zakaria as I honestly think it would settle things down in that department a lot. The other positions, realistically we'd have to wait on I think.
A good face value comparison to show why I think Zakaria could be an interesting fit. Also check out Ndidi if you get a moment, his numbers are insane!
I compared Zakaria with Fabinho, Winks, Rodri as well as Ndidi.