Okay so this is my understanding right.
Richmond convince Yarran at the start of the year they love him and want him at Richmond.
Yarran proceeds to not give a ****, not try, put in a shit effort all year, because hey, i'm going to Richmond.
Richmond confirm - "yep Yarran we love you, we think you're worth a late first round pick" (This is quoted by Richmond personnel)
Suddenly Richmond can't get a deal done, try to offer pick 19 (not a first round).
Richmond - still love ya yaz, you're amazing.
Richmond - you should leak to the media that you wont play in 2016 if you don't get traded.
Yarran - won't play in 2016 because i'm a sook.
Richmond - Lobbe is worth pick 12, hold on here, is Yarran really as good as you've told him all year?
You're obviously fine with parting with #12. You've said he's worth a pick in the late first round. You've told Yarran you want him. Why is Carlton the bad guy for not trading a contracted player for below his worth.
If Yarran sits out next year, hello suing Yarran for his contract, hello investigating Richmond for draft/trade tampering, approaching players before Trade Period, hello Yarran becoming incredibly unfit on his year off. And if he tries to train with Richmond - hello suing Richmond for breaching his contract.