Mass. Gen. Laws ch. 190B, § 3-903: Right of retainer

Section 3–903. [Right of Retainer.]

The amount of a non-contingent indebtedness of a successor to the estate if due, or its present value if not due, shall be offset against the successor's interest; but the successor has the benefit of any defense which would be available to him in a direct proceeding for recovery of the debt.