If Liverpool win at Spurs next weekend, they'll challenge for the title, at least until March or so. Unless we win at Anfield, that is.
Arsenal are finding it more difficult now that they are considered among the favourites. Last season was kind of a free hit for them in terms of title challenge. It ain't so now and it shows.
It's too early to tell. We don't know whether we won't suffer from injuries and fatigue after the heights of last season. Rodri losing it yesterday may be down to mental fatigue. Him missing some games now may be a blessing in disguise. Same with Bernardo, KDB, Grealish and Stones.