The 2013 NHL Winter Classic at Michigan Stadium is going to be cancelled, according to an ESPN report.

Citing a source, ESPN reported Monday that the planned Jan. 1 showdown between the Toronto Maple Leafs and Detroit Red Wings will be officially called off Thursday by the league.

Ongoing collective bargaining negotiations between the league and the NHL Players' Association have already lead to the cancelation of games through Nov. 30.

NHL Commissioner Gary Bettman said earlier this week that the negotiation process was likely to get tougher going forward.