Penn State may have to wait for the Penguins. A potential outdoor game at Beaver Stadium involving the Penguins and Philadelphia Flyers has one significant obstacle to overcome a high-ranking NHL official said Thursday. “It's always fun to come up with those scenarios in the league office or as a third party but at the end of the day it does require a club to give up a home game” said NHL chief operating officer John Collins. “We haven't broached that yet.” Penguins CEO David Morehouse and his Flyers counterpart Peter Luukko held preliminary conversations about a potential outdoor game that would bring the commonwealth's two NHL clubs to Beaver Stadium. Neither side is eager to dismiss the Beaver Stadium game as a possibility but there is no firm agreement between the Penguins and Flyers on how to pull off a neutral site game. NHL clubs — unlike those in NFL and MLB — generate the majority of their revenue from home gates. The NHL not its accommodating host club receives an undisclosed share of the gate for the Winter Classic and its outdoor game series. Collins a former NFL executive was the driving force behind the NHL's original Winter Classic in 2008 and that event's success sparked the five additional outdoor games this season. Although the Classic — which will be staged between Detroit and Toronto on New Year's Day at Michigan Stadium — remains the most significant event on the NHL calendar other than the Stanley Cup Final the five additional outdoor games are potential building blocks for future series Collins said. “Every game opens a new opportunity” Collins said citing a Los Angeles showdown between the Kings and Anaheim Ducks at Dodger Stadium that will take place the night after the Grammy Awards ceremony. “I think it's a fairly unique year.” The Penguins are proving a unique instrument for the NHL because Sidney Crosby is according to NHL commissioner Gary Bettman “the face of our game” across North America. Crosby played for the Penguins in their exhibition game at United Center on Thursday night. It was only his second game in the Windy City since his rookie season (2005-06).