Michael Frolik came over to Chicago in a late season trade with Florida. ((Nam Y. Huh/Associated Press))

The Chicago Blackhawks have reached agreement with young forward Michael Frolik on a three-year deal and signed unrestricted free agent Sami Lepisto to a one-year pact.

The 23-year-old was acquired by Chicago during the second half of the season in a trade with Florida.

Frolik's numbers in 2010-11 took a dip from his first two seasons, as he finished with 11 goals and 27 assists in 80 games.

Frolik scored 42 goals in his first two seasons with the Panthers, including 16 power-play markers.

The Kladno, Czech Republic native was selected 10th overall in the 2006 NHL Entry Draft by Florida.

The club did not release financial details, although multiple reports suggest it will average to just over $2 million US per year.

Frolik was a restricted free agent finishing up the terms of his first pro contract. He earned $850,000 US last season according to salary cap site

The Finn Lepisto had four goals and 12 assists in 70 games last season split betwen Phoenix and Columbus.

The 26-year-old blue-liner has played 150 career NHL games, with a stint also in Washington.