Looking at this Arsenal squad, honestly I think that are good enough to challenge with their current squad (provided they do not discard Thomas Partey). Squad rotation, game management, Mentality & tactical flexibility are the key aspects that should be improved going into the season as I see excuses of injuries being their major setback last season. They came to winning the title and I’m seeing them going again this season. I wish them a successful season.
Arsenal is the only team that can compete with Manchester city as it stand, they have got the right player to give Manchester city a tough competition next season. last season they bottled the league because they got no good squad to rotate, every weekend it was just set of first eleven and they got some injuries issues too. But now they have a good bench to rotate and rest some players.
Newcastle is another team to look out to, their appearance in the Champions league may distract them for the title race. All their focus are on good results in the champions league.