From and after July 1, 2000, subject to the rules adopted by the board, the supplemental legislative retirement plan shall accept an eligible rollover distribution or a direct transfer of funds from another eligible retirement plan, as defined under applicable federal law, or an individual retirement account, in payment of all or a portion of the cost to reinstate previously withdrawn service credit as permitted by the plan. The plan may only accept rollover payments in an amount equal to or less than the balance due for reinstatement of service credit. The rules adopted by the board of trustees shall condition the acceptance of a rollover or transfer from another eligible retirement plan or an individual retirement account on the receipt of information necessary to enable the plan to determine the eligibility of any transferred funds for tax-free rollover treatment or other treatment under federal income tax law.