We would like to state that the Hajj of he/she who missed farewell tawaf during Hajj due to stampede is valid and he/she is not required to offer hady (a sacrificial animal) according to some Muslim scholars.
However, if he/she is well-to-do and he/she is willing to offer hady for that, there is nothing wrong with sending the money allocated for buying the sacrificial animal to be slaughtered in Makkah with someone who is going to perform Hajj the following year. He can also give the money to Al-Rajhi Company who can slaughter on his/her behalf. The hady can be a sheep of ten months or one year it has good meat.