No, you don't. You have lawyers to assist managers in legal matters. But you can't simply throw a contract at a lawyer and ask "What do you think?" All the terms need to be understood by the manager. It is however reasonable to ask a lawyer "What does this say in normal language?" and "Is there any provision in this thing that sticks out as being really out of line or would trip us up if we had to litigate it?" Understanding a contract is not difficult. I've negotiated contracts with some of the largest companies in the world over my career and it only worked because I was also reading the contracts and interacting with the lawyer as a partner.