A teacher taking maternity leave pursuant to this article shall be entitled to receive pay for the period of leave up to seventeen (17) weeks in the amount of ninety percent (90%) of the salary being received at the time leave was taken, this pay to include any benefits received from Human Resources Development Canada to a Supplemental Unemployment Benefits (SUB) Plan. The implementation of this clause is subject to the successful arrangement of a Supplemental Unemployment Benefits (SUB) Plan with Human Resources Development Canada.