Chelsea begin their title defence with a home game against Burnley, and while Sean Dyche's men were impressive last time out and the Blues have shown vulnerability in pre-season, this will be a match that Antonio Conte's men will expect to win.
In the short term, Chelsea start the season with Eden Hazard and Bakayoko out injured, while Morata is still getting used to his new teammates and may take time to settle. A lack of activity in the transfer market has its fans a little anxious.
Compounding the recruitment problem has been the deluge of departures.
The defending Premier League champions have added only four new signings, while the likes of Nemanja Matic, John Terry, Nathan Ake, Juan Cuadrado, Asmir Begovic, and Nathaniel Chalobah have left. The 24 names that featured for the Blues included the exiled Costa and departing Loic Remy, as well as academy youngsters Andreas Christensen, Charly Musonda Jr., Jeremie Boga and Fikayo Tomori, who can list one Premier League appearance between them. They are going up against the best in the world from the other countries and being successful, so why can't they have the chance at the bigger clubs in the Premier League? Conte made it a clear what "a great loss" it is for his side to see Matic go to a league rival, and just how "very important" the Serbian was to his team. The context, however, was very different. While the striker's return on a free transfer might have attracted the most attention, it is manager Ronald Koeman's other signings that make Everton a threat.
What did you make of Antonio Conte's claim Chelsea have to sign more players if they are to retain the title? It will be quite interesting to see how Chelsea handle having Champions League football this season.
Factoring in every year since Abramovich's arrival in 2003, the figure averages out at 20.9, marking out this season's squad as a significant anomaly.
Manchester City, which last won the title in 2014, and Manchester United, which has now gone through a five-year drought since the retirement of Sir Alex Ferguson in 2013, are the two favorites to lift the league champion trophy in May.
The most reliable predictor of future Premier League performance is past Premier League performance.
"He's starting to understand what I want from him during the game", Conte said. For the first time in 20 years, Arsene Wenger's side will be missing from the Champions League as a outcome of its fifth-place Premier League finish. We are trying to improve.
Arsenal manager Arsene Wenger had an answer, pointing to Chelsea sending numerous players out on loan, while former England captain turned pundit Alan Shearer said there was "something brewing which isn't nice" at Stamford Bridge.
Conte said there was "no news" on Costa, who is expected to leave in the transfer window.