Duplex lease of tenant is 4 months longer than disclosed

[Tyler Z.]

The tenant that is currently in one of the apartments of a duplex we are purchasing that pays significantly less than FMV rent is actually in lease for another 4 months longer than we were advised. Originally we were accepting the fact that we would have taken less than FMV with the anticipation of raising rent when the lease was up. Now that we have found out that we were misled and having to take another 4 month hit, we are getting weary of what's to come. By no means does this break our banks, but is there a reason for concern?

Also first time poster!