Come on now... We usually make at least 4 signings.
In 17/18 season we bought: Rudiger, Bakayoko, Morata, Drinkwater, Zappacosta and Caballero on free. And in winter Giroud, Emerson and Barkley. More than 250m pounds all together.
And this is all in normal situation. We had transfer ban so I expect even more activity now.
Ziyech was bought in January.
Only Werner this summer. After Havertz I can easily see us buying 3 or 4 more players. Not all of them are going to be expensive like Oblak, Chilwell, Gimenez and Rice but some cheaper players like Reguilon and cheaper GK or CB will definitely come.
After Kai new GK, CB and LB is least we can expect.