Despite the salary cap increase, there are a number of NHL teams with very limited flexibility. Could Danny Briere make a trade to acquire a player who could help the power play or bolster the blue line with one of the teams? Plus, a look a what player Matvei Michkov could jump if he earns a spot in the top-6 in camp, and some leftover mailbags as well as a ranking of the top cores in the NHL, 25 and under.