No one will ever bet on Chelsea to win the Premier League title at the end of this season and even if Chelsea makes many changes in the teams and hires many players to have better performances, I still don't think if they can have any good chance for winning the title and as you said the best thing they can do at the end of this season is to just get the Europe League ticket for the next season which still hard for a team like Chelsea considering the results they got so far.
Is really funny, even the owner won't try betting on Chelsea to win the league even if they managed to be at the top I still believe they'll drop and the better team would win the league. Well that's by the way but this Chelsea team can still make it to the top 4 if they work harder and continue winning games, they can surpass Manchester United because I see a serious team coming out of Chelsea and they can do it. Pochettino need to introduce both Jackson and Broja, playing them as the strikers with Nkunku and the other guys to force in more pressure on any opponent they meet and I believe it will be in there favor, they can make the fans smile this year.