Cash For Keys - California Law

I am under contract on a property in San Diego.  The only contingency remaining is that the tenants must be out prior to close of escrow.  The sellers are out of state and would like me to have a conversation with the tenants in regard to cash for keys.  The sellers have already asked the tenants if they would voluntarily move with monetary  compensation and the tenants said yes.  This is the extent of the involvement the sellers want in this process.  It is now up to me to finalize the details on how much each tenant will need to vacate.  I am not a real estate agent, property manager, etc.  I am simply trying to buy this property.  Am I allowed to have this conversation with the tenants and be the paying party for the "Cash for Keys" agreement?