Can sellers use their qualified replacement property investments as collateral on a loan from a bank or other lender for loans for ESOPs to buy the company?
The seller may pledge stocks or bonds that are purchased as "qualified replacement property" as part of a "Section 1042" rollover transaction (a transaction in which owners sell to an ESOP owning at least 30% of a closely held company's stock). The replacement property is released as the loan is repaid. Lenders and sellers negotiate the terms of this transaction. Naturally, sellers try to pledge as little of it as possible.
For more details, see Selling to an ESOP and Financing the Deal and the ESOP Pre-Feasibility Toolkit.
Link to this FAQ Topic: Financing an ESOP