Kevvie tried to put the genie back in the bottle and reverse engineer Dearden by him playing Cup and taking it slowly with him. Dearden started 21 in Cup and Kevvie took it slowly playing him off the bench, then back to Cup. But it was too late. I think Kev was trying to fix so many things team wise and environment wise for Dearden to come into a good team that Cowboys slipped in and got him and honestly it wouldn't have been a hard sell.
Kev only coached him for five games in 21 and then he signed with the Cowboys, Broncos got Reynolds and Broncos let Dearden go straight away.
I don't think Dearden was ever going to find his happy again at the Broncos, he'd had a terrible two years, and the place was a mess. Like Walsh with the Warriors, they timed it perfectly and told the player exactly what they needed and wanted to hear at the perfect time.