I don't offer high returns like that as I do micro trading and lending on poloniex,  I have a lending bot written that you could use and make profit yourself or use my own service if your interested links are below.

lending bot
https://bitcointalk.org/index.php?topic=1744380.0

Trading / Lending Service
https://bitcointalk.org/index.php?topic=1766080.0

Let me know if your interested on the lending bot you could make back a decent amount depending on what your planning to loan out on the platform and length of loan and rates.

Thanks

Rootcoin