I think if ETH can get Antony settled in and firing, Sancho firing, in the summer find a starting midfielder over Erikksen, and most importantly get a striker, then the rest of the team/squad is sufficient enough to challenge for the title.
This season, if he gets Sancho and Antony firing and a striker to come in, we may surprise with a long run.
Also a bit concerned that the crop of players (outside of Casemiro, Erikksen, Martinez and Antony) may have a confidence issue whenever we face City (given we've been battered by them and have only gotten results playing on the counter)