The most stable club in the Premier League is still Manchester City. Liverpool and Manchester United are trying to strengthen themselves. And adding more talented players to the team. But we are not sure if they will be able to perform consistently well in the coming season. Because new players need time to adapt to the team. And so I consider Manchester City as the favorite for next season's Premier League title.
Of course, Man City will be always the favorite team to win EPL title. They have the strongest squad, they almost have no weaknesses. They also proved it in the last season that they could win treble winners. Moreover, Man City has a winning mentality, they continue to struggle although Arsenal leads the table in the 1st half of the last season. This is something that Arsenal, Man United, or Liverpool don't have.
However, since Arsenal, Man United, and Liverpool try to strengthen their squad during this transfer window. They may have a chance to beat Man City in the next season. We must know that EPL sometimes has a surprise in every season. We also don't exclude Newcastle, they are playing in UCL in the next season. They may try to compete for EPL title in the next season.
By the way, commonly new players need time to adapt. But it is not impossible for the new players to adapt faster. Moreover, some players may just join new clubs but they aren't moving to another league. It won't be so difficult for them to adapt since they are still playing in the same league.
Man City are the only contenders for the first place in the EPL... Last season, Arsenal managed to surprise everyone, but no miracle happened and they couldn't win the league... Apart from Man U and Liverpool, now there is Newcastle who are showing great results and even managed to finish in fourth place... I think next season the battle for the title will be just as interesting...