Tires damaged – replacement necessary?

Hello together, my father with his MB C-Class stayed stuck while trying to avoid a truck on a curb. Both rims were damaged at the passenger side. After closer examination he noticed today that the tire on the VA was damaged a bit more. The tire was cut down, so that a kind of ‘bag’ was created. My question is now whether one can drive these tires even further. The vehicle is a leasing car. The tyre is a Continental Sport Contact 3 225/40 ZR18 92Y. Pictures in the appendix. Thank you very much in the foreground greetings. We are looking forward to seeing you again at the end of the rental period.