Holding title as tenants in common means that each party owns a specific percentage of the property. Each party is free to deal with their respective share as they see fit. They can sell, will, give, or otherwise encumber their share. However, and it is a big however, the receiving party for such interest will now be in common ownership with the remaining tenants in common.
In practice, it is usually difficult to find a buyer or lender willing to participate in such a plan. But, transfers to other family members or friends or charities is certainly possible. If you don't want to sell your half, you don't have to do so. You will simply remain a half owner with whoever buys the other interest.
Or, perhaps you can buy the other interest yourself and thus become the sole owner if you co-tenant will sell it to you.