While only Dallas can offer a five-year contract and still has the ability to put a richer offer on the table than New York, sources indicate that the Mavericks don’t expect to be able to sway Brunson at this point. It is more likely, sources say, that Dallas will try to engage the Knicks in sign-and-trade talks to try to salvage a measure of compensation (and perhaps a trade exception) by trying to collaborate with New York on a deal.