From the official release...

The 6-3, 200-pound native of Stockholm, Sweden, was limited to 17 games due to a mid-season wrist injury that required season-ending surgery. Karlsson recorded five goals and three assists for eight points during his sophomore season in 2012-13.

During his freshman season, Karlsson led the Huskies in scoring (a first by a freshman since the 2006-07 campaign), tallying 10 goals and adding 16 assists for 26 points in 32 games. He tied for the team lead in goals and finished 12th nationally amongst first-year skaters in points per game (0.81) and third in Hockey East. Karlsson was selected as the Hockey East Athletic Republic Player of the Week on Nov. 21, 2011, and became the 19th Husky in program history to be named to the Pro Ambitions Hockey East All-Rookie Team.

Prior to enrolling at Northeastern, Karlsson played two seasons with the United States Hockey League’s Green Bay Gamblers (2009-10 to 2010-11). During his first season with the Gamblers, he notched 30 points (eight goals, 22 assists) and helped Green Bay capture the Clark Cup. In 2010-11, he logged 40 points (16 goals, 24 assists) and boosted Green Bay back to the Clark Cup final along with a 48-19-4 overall mark.

The contract isn't Karlsson's first contact with an NHL franchise as he has attended both the Anaheim Ducks and Nashville Predators development camps in 2012 and 2013 respectively. At 6-foot-3, 200 pounds, he has size you look for in a pro forward and possesses a good skill set.

College free agent pools have been an effective way for NHL franchises to add depth to their system outside of the draft and the Sens have done that with this move and should bolster the Binghamton roster, particularly with a couple of players poised to make a permanent leap to the NHL.