There are pressing concerns for the Bruins this summer. Most important is landing the transitional defenseman that was missing from the B’s defense corps last season, and Don Sweeney is also pushing contract talks ahead with Loui Eriksson and Torey Krug with contracts expiring for both key players. But Sweeney made sure to also stress on Friday afternoon that inking left winger Brad Marchand to a contract extension was also a front burner priority for the Bruins once a deal can officially be signed starting on July 1. That’s good news given that the price keeps going up for a player routinely been among Boston’s leading goal-scorers every year since coming into the NHL, and exploded for a team-leading 37 goals last season. “We’re going to look at Brad right away…early on here in the process once we get past that first wave in July,” said Sweeney, while addressing the Bruins media at the Buffalo Courtyard Marriott on Friday afternoon amid the NHL Scouting Combine. “We’ll have some good discussions. We’d prefer that we’re tracking on the earlier side of things. He’s a big part of our hockey club.” Coupling the giant season with the cachet that goes along with winning a coveted spot on the Team Canada World Cup roster, the price just keeps going up for a B’s agitator that’s starting to transform as a player.