He is a better version of MKG, who got 13 million over 4 years in 2016.
In 2016 the salary cap was 94 million, meaning he got roughly 14% of the cap in his first year.
Winslow will get roughly 12% of the cap.
Winslow is a better defender than MKG, regardless of reputation. I also have way more confidence in Winslow's shooting form going forward.