Friday is an important day for the Bruins. They are back in the first round of the NHL Draft (25th pick), which will be held at Philadelphia’s Wells Fargo Center. They ceded that privilege last year as a condition of the Jaromir Jagr trade with Dallas. This will be the first draft for Keith Gretzky, the team’s director of amateur scouting. Gretzky replaced Wayne Smith, whose watch over six so-so drafts was judged not good enough to merit a seventh. But their most urgent piece of business centers on a player who was drafted 19 years ago. Jarome Iginla, the 11th overall pick in 1995, was an excellent fit on the first line last season. Iginla had 30 goals and 31 assists in 78 games while playing alongside Milan Lucic and David Krejci. The Bruins do not want to see Iginla walk. But they may have no choice. They are already facing a bonus overage penalty, estimated to be around $4.5 million, for 2014-15. With the salary cap projected to be approximately $70 million, the Bruins will be forbidden from approaching the ceiling because of their penalty, the bulk of which stems from the $3.7 million in bonuses Iginla totaled as a first-year Bruin. So while Iginla deserves a multiyear deal, it would be difficult for him to get it in Boston. The Bruins could offer Iginla a similar bonus-stuffed contract as a 35-or-older player. But such structure is allowed only on one-year deals.