Porter's deal is worth $650,000 at the NHL level or $105,000 at the AHL level, according to the St. Louis Post-Dispatch.
Porter appeared in a career-high 47 games for the Blues last season, scoring four goals and adding three assists for seven points. The 28-year-old has played in 98 NHL regular-season games, all with the Blues, scoring eight goals and adding eight assists for 16 points along with 27 penalty minutes. The Toronto native was chose by the Chicago Blackhawks in the ninth round (No. 282) of the 2003 NHL Draft and was signed by the Blues as a free agent on Aug. 21, 2007.
Peluso, 23, played in 61 games for the Blues' American Hockey League affiliate, the Peoria Rivermen, last season, scoring four goals and five assists for nine points along with a team-leading 159 penalty minutes. The 6-foot-3, 235-pound forward was selected by the Blues in the sixth round (No. 160) in the 2007 NHL Draft.
Sonne, 23, played in 70 games for the Rivermen last season, scoring eight goals and adding nine assists for 17 points along with 40 penalty minutes. He was selected by the Blues in the third round (No. 85) in 2007.