There's a potential battle brewing involving the Islanders and Rangers, according to an ESPN.com report.

A major selling point of Bruce Ratner's pitch to win the renovation rights to Nassau Coliseum is the promise to bring the Islanders back to the arena for a six-game slate after they move to Brooklyn's Barclays Center.

And while that would appear to be enticing to the Nassau County executives who are currently deciding among four bidders, it's not a promise Ratner necessarily can deliver.