The Boston Celtics signed former Jazz forward Gordon Hayward to a massive, four-year, $128 million deal. Until trading Avery Bradley earlier this morning, the Celtics were looking to make room for Hayward to sign.

The most prominent rumor is concerning a sign-and-trade with the Jazz, where forward Jae Crowder moves to Utah, and Hayward goes in the opposite direction. However, Celtics general manager, Danny Ainge, is not looking to just give up Crowder, without any assets in return.

Marcus Smart is another Celtic that has been mentioned as a potential asset Boston may look to trade.

Smart is apparently on the radar of the New York Knicks. However, there is an issue dividing Celtics and the Knicks on a possible deal.

As Al Iannazzone from Newsday reports, the Celtics want a first round pick and center Willy Hernangomez, while the Knicks are only ready to give up forward Kyle O'Quinn. While the first option makes sense for the Celtics financially, O'Quinn makes virtually no sense, because he is due only $450,000 less than Smart for next season. Hernangomez, on the other hand, makes around $2.7 million less than Smart.

Also, the Knicks do not want to let go of a first round draft pick, as it could be in the lottery. Lottery picks hold great value for a rebuilding team like the Knicks.