Its halfway through the season and Kawhi was injured for a good stretch of games. Talking about trading him is ridiculous if only because he is still on his rookie contract and you can't possibly get equal value.
That being said, the guy does need to step up in the second half of the season. If you look at Tony and Manu's second seasons, they improved dramatically. I don't think Kawhi is in their caliber but with how Pop was talking about him, thats what you expect.