Bono is still Generation Adidas as of 2019 season thus automatically protected.
https://www.torontofc.ca/players/alex-bono
Generation adidas players who have not been graduated at the end of the 2019 MLS Season and Homegrown Players (ages 25 and under –born in or after 1994) on a club’s Roster at the end of the 2019 MLS Season are automatically protected. Clubs do not have to use a protected slot on them.