Hard rock left winger Milan Lucic, with one year remaining on his current contract, has agreed to a three-year, $18 million extension. Lucic is entering the final season of his current deal, which averages $4.083 million annually.

In 2013-14, the first year of Lucic’s extension, the power forward will become the second-highest-paid player on the team. Zdeno Chara is the leader at just under $7 million annually.

Lucic, age 24 and already a five-year NHL veteran, would have become an unrestricted free agent on July 1, 2014 under the league’s current collective bargaining agreement.

Earlier this week, the Bruins inked second-year forward Tyler Seguin to a six-year extension at an average $5.75 million per season. The deal came only days after Brad Marchand, also with a year remaining on his contract, signed a four-year extension worth a total of $18 million.

Meanwhile, with the current CBA to expire this evening, the league and the players’ union remain at loggerheads over many key economic issues--including the league’s desire to place limitations on the term length of player contracts. Absent an unexpected 11th-hour turnround, Commissioner Gary Bettman will impose the third lockout of his tenure, which began at the start of 1993.

In an eight-day span, the Bruins have committed $70.5 million in total future salary to Lucic, Seguin, and Marchand.