Matthew Hulsizer has agreed to a major concession with the Goldwater Institute in a last-ditch effort to complete his deal to buy the Phoenix Coyotes. Hulsizer has agreed to cover any shortfalls in parking revenues that are at the heart of the Goldwater Institute's threat of a lawsuit over the proposed lease agreement between the City of Glendale and Hulsizer. Hulsizer told ESPN.com Sunday night he still believes the agreement between he and his investors with the City of Glendale is legal, but felt it was more important for the deal to move forward and so made the concessions.

Team chairman Dave Checketts said Wednesday night that his group, Sports Capital Partners Worldwide, and Towerbrook Capital Partners have placed the NHL St. Louis Blues franchise and the Scottrade Center on the market. The two groups own roughly 90 percent of the franchise, according to an ESPN.com report.

NHL general managers have decided against recommending a ban on head shots to curb concussions. Instead, they will propose tighter enforcement of rules on charging and boarding, according to an ESPN.com report on Tuesday. The general managers also will propose longer suspensions for illegal head hits and repeat offenders.

The company that owns the Toronto Maple Leafs and Raptors might soon be changing hands. The majority owner of Maple Leaf Sports and Entertainment says it will explore the possibility of selling its 66 percent stake.

In an unusually public faceoff between a pro sports league and one of its major sponsors, Air Canada has threatened to pull support for the NHL, saying that violent play on the ice hurts the airline's brand image. Commissioner Gary Bettman responded Thursday that his teams could retaliate by deciding to stop using Air Canada for charter flights, an important source of revenue for the airline.

Montreal police started a criminal investigation Thursday into the on-ice hit by Boston defenseman Zdeno Chara that left the Canadiens' Max Pacioretty with a severe concussion and cracked verterbra. Police said they are acting on a request by Quebec's director of criminal and penal prosecutions, Louis Dionne. Police added that after evidence is collected it then will be determined if there are grounds for prosecution. The NHL said a day earlier it would not suspend Chara for Tuesday night's hit, when he slammed Pacioretty into a glass partition near the edge of the Bruins' bench.

The City of Glendale remains poised to file suit against the Goldwater Institute over what it alleges is illegal interference in the attempted sale of municipal bonds critical to keeping the Coyotes in Arizona. However, the city held off on filing the suit on Monday, according to sources. The city has said the loss of the team would cost the municipality more than $500 million in lost jobs, taxes and revenue.

The City of Glendale is expected to file suit Monday against the Goldwater Institute and specific members of the public watchdog's board, according to sources. The city is faced with what they estimate will be more than a half-billion dollars in lost revenue, taxes and jobs if the Phoenix Coyotes relocate. The lawsuit is expected to allege the Goldwater Institute was guilty of a legal form of interference when the institute reached out to potential buyers of municipal bonds.

Researchers at Boston U. found a degenerative disease in brain tissue donated by former NHL enforcer Bob Probert, according to reports in The New York Times and The Globe and Mail in Toronto. Probert had chronic traumatic encephalopathy when he died last July of heart failure at age 45. He played 16 seasons in the NHL and his 3,300 penalty minutes ranks fifth on the league's career list.

Douglas Miller has made an offer to buy the Stars, The Hockey News reported on Tuesday. Miller is the CEO and chairman of the board of Exco Resources, and oil and gas business in Dallas. He is also the owner of the CHL's Allen Americans. He has also provided financial support for the Dallas Stars Triple-A Midget Hockey Club for several years.