CIBC to anchor both towers. 1.75 million-squar- feet of the 2.9-million-square-feet. Tower 1 the shorter tower will be completed by 2020 with the new bus terminal and the second tower completed in 2023.

Source:
http://urbantoronto.ca/news/2017/04/cibc-announced-anchor-tenant-bay-park-centre
TORONTO | Bay Park Centre | Tower 1 - 238M - 49 | Tower 2 - 264 M - 54F