He is 76, he maybe as spry as Trump, also treat the accuracy of his speech with similar amount of salt. If you're going to scrutinize over his plurals then, you may not be that interested in what he was actually trying to communicate here.
While no one knows why JR says what he says at these pressers, ask yourself logically why would Quinn tell management he wants to play in the NHL with his brother(s) if he's not just outwardly asking for a trade? Just for giggles?
Grandpa JR is not telling the world Quinn wants to leave, just that Vancouver will have the cap space for him, but if he still chooses not to stay, it'll be because of some other reasons out of their control like him wanting to play with his brothers.