Two sources told ESPN.com the Boston Celtics and New York Knicks are in advanced talks about a Nate Robinson-for-Eddie House swap. Both sources stressed that a deal was not completed yet as of 3 p.m.

A potential holdup in the deal, the Boston Globe reported, is the fact that House’s $2.8 million salary does not match the $2.02 million that Robinson’s contract is worth, so there would need to be more to the deal than a one-for-one swap. One rumored possibility is that the Celtics could include a second-round pick in the deal.

A source close to House told the Globe that House wasn’t mentioned prominently in the deal until late Tuesday.

The 25-year-old Robinson would back up starting point guard Rajon Rondo if dealt to the Celtics and is averaging 13.2 points and 3.7 assists per game in New York. He was fined by the NBA earlier this season after his agent told reporters he had asked the Knicks to trade his client.

In his third season in Boston, the 31-year-old House is averaging 7.1 points per game off the bench for the Celtics.