Cap hit aside, If they bought out Purcell the owner would still have to pay him. Now that's Edmontons problem.
Sure, but TSN tells that when Tampa traded Purcell for Gagner they didn't know yet that Coyotes were going to get Gagner off their hands. So instead of Purcell their owned would've had to pay for Gagner. The timing of these trades was right after the announcement of the new salary cap (which was lower than what was expected) so you'd think that cap hits are the reason behind these moves and not the actual salaries.