Trade framework of Fred VanVleet, OG Anunoby and a first-round pick for Simmons was rejected by Toronto.

From action network

https://www.google.co.kr/amp/s/www.actionnetwork.com/nba/nba-free-agency-2021-draft-intel-ben-simmons-kyle-lowry-cade-cunningham%3famp=1

“Multiple sources confirmed Sunday that the Toronto Raptors have emerged as a team with “significant” interest in Simmons. One source close to talks said discussions have not been substantial as of yet. Two other sources said a proposed framework including Raptors guard Fred VanVleet, OG Anunoby and a first-round pick for Simmons was rejected by Toronto.”