Tenant paid all funds to move in but prior to Move in Day can't

[James Nix]

Hi everyone, 

So this question is actually from my Dad he owns a multifamily and is in the process of renting it out. He found a prospective tenant & got a security deposit ($750) from him to hold the unit for Move in Day. After that he also tells me that prior to Move in he collected the other Funds from him also ($1500).

But on Move in Day he tells my Dad his job is moving him to another state (Florida) and he will not be able to Move in and fulfill the lease. So my Dad is wondering will he be required to send all the Move in funds back to him? 

thanks in advance for any help on this Matter.