Off Market Deals with Tenants???

Can anyone advise how you handle deals that are off market when you are negotiating a non owner but occupied residence? I had a seller tell me that they will sell to me but they didn't want the responsibility of giving tenant notice and that it would be my responsibility. I don't really like committing myself to a deal that is hard for me to market myself and not vacant. How would you handle that objection while negotiating a deal? Tenants are good tenants and always pay on time but I do not want to buy and hold. I want to either wholesale or fix and flip.