Tuchel averaged 2 points per game, so if he'd had the season and managed that, he could have had them second. They'll definitely be challenging for the title next season, but with the lowest goals for rate of all teams in the top seven (behind even West Ham, Spurs, Leicester), a top striker is necessary. Wouldn't be surprised if they signed Haaland.
They'll also have to be careful with Kante. He'll not get much rest with the Euros and he's been picking up more and more hamstring injuries in recent seasons.