Jazz playing chicken with Boston.
As it stands now, Boston won't have cap room to make Gordon an offer this summer without making some significant trades. They're nearly $12M OVER the cap right now. Expirings are Humphries ($12M), Bayless ($3M) and Avery ($2.5). Add in cap holds for their picks and they're dead in the water. They'd need to clear off Rondo, Wallace or Bass and Bogans. Bass has value but good luck finding a taker for Wallace's contract.
Simply put, if they want Hayward, they have to trade Rondo to a team that won't send salary back or give up their lottery pick. It's that simple. And even then, Utah can (and likely will) match an offer for Hayward. Or, some other team may step in ahead of Boston while they're trying to clear room and sign Hayward to an offer sheet.