If I recall, the chatter was the Spurs wanted a package highlighted by Kyrie for Kawhi.
I don't think it was as simple as some donut assortment of Brown, Smart, Tatum, Rozier, etc for Kawhi.
It may have been Kyrie and Brown and/or draft picks...I don't know.
But regardless, I wouldn't have dealt Kyrie for Kawhi.
We needed to see what Kyrie could give us post knee surgery and Kawhi's reputation last season wasn't the greatest. He appeared (at least to me) as an injury prone player who quit on his teams.
The Raptors took the risk and good for them. But for all things to be concerned about right now with the team, I don't lose much sleep over the Celts not acquiring Leonard last summer.