No, it doesn't sound natural in Ruassian. I'm not sure what you want to say, but Мы заключаем сделку с иностранными партнёрами sounds more natural. It means "We are striking a deal with foreign partners." Is that what you mean?

Мы готовим (preparamos) сделку с иностранцами es mejor

Мы совершаем сделку с иностранными партнерами. It is like 'execute or make a deal'. Phrase ' совершать сделку' is more common for The Russian Civil Code and for contracts. But if you provide such a service Iris's comment is the best for you.