Tenants already in newly acquired property

[Dusty Warner]

If I were to buy a duplex with the intentions of rehabbing and raising the rent, but both units have renters in them for the past 5 years what is the best option?? I was thinking of maybe informing them of what I plan to do and possibly have them renovated while the tenants still lived there, but if they do not agree to this is my only option to evict them or is there some legal protection that allows me to kick them out when I acquire the new property??