(b) Basic rights of persons to be displaced. Notwithstanding any provision of this subpart, no person shall be required to move from a displacement dwelling unless comparable replacement housing is available to such person. No person may be deprived of any rights the person may have under the Uniform Act or this part. The Agency shall not require any displaced person to accept a dwelling provided by the Agency under these procedures (unless the Agency and the displaced person have entered into a contract to do so) in lieu of any acquisition payment or any relocation payment for which the person may otherwise be eligible.