Partnership for 1.5% monthly returns

[Une vrai Liberte]

Hello, I was approached by a local investor and he offered me to partner on project with him for 1.5% return monthly by lending him money (5k). I think it is very small but needs to boost my real estate career, I want a better deal with this guy but taking this risk to learn the ropes and how things work in real estate in my area. On the deal, I am allowed to go visit the flips and see how things get done on the field. What advice will you guys give me in order to convince him for a better returns and a 50-50 deals on his next flips. I do have enough finance to spend 40k on each of his future project but don't want to get scam and not learn anything worth. Advice on how to approach him will help me a lot. Thanks for all answers.