Evicted by old building owner now what

[Scott Painter]

I closed on a 4plex 6 days ago. At closing I learn one of the tenants is 2 months behind and "playing games" with his rent. Today the former owner took him to landlord court to get him evicted and get a judgement to collect back rent. Per the court, on Monday he will have 72 hours to be out. 

Should I let the old owner kick him out. Is this judgement able to stand as he doesn't own it any more. Should I offer the tenant a second chance if he can come up with $900 (first month and security) in 72 hours and write a new lease with me. Should I evict even if he does have the ability to come up with funds.