Having a replication from a several nodes galera cluster to one replicat

One of our very important customer is requesting us to find a solution in order to be able to replicate data from a whole galera cluster to a single replicat node. This would allow to replicate from one galera master node, and move to another galera node if the previous one goes down. In a way, it could be seen as a replication from the whole galera cluster to a single replicat.