One thing that will benefit us a little is that Euro qualifying is over so the international breaks won't take as much out of our team. We don't have many South American or African players, so we also don't have to worry about that impacting our squad.
Still, we need a little more depth. If Hugo, Dier, Toby, Walker, or Kane get injured we will dip in form. We don't have anyone who can step in at the same level right now.
We are not going to spend for a Goalie, so we just have to roll the dice on Hugo.
I think a physically dominating and hard tackling CM to give Dier cover is the most likely and easy to get in the transfer window, even if it is a smaller spend and the person only has to deliver in 4-5 games.
We are not going to get a right back anywhere near as good as Walker in the transfer window, so we have to roll the dice there as well, knowing that we may have to move Dier there if Walker gets injured. (Not ideal)
And a backup to Kane has been discussed ad nauseum so I won't recap.
My take, we can probably make top four with our squad. But, we'd be much more likely to make top four if we pick up a solid CM like Wanyama (even if it is not him). And if we get a striker that is cool with sitting on the bench and only getting a runout as a sub or getting a few starts here and there.