Danny Duffy requested $8 million and was offered $7.25 million by the Royals when arbitration figures were exchanged on Friday.
Brian McTaggart of MLB.com reports that the Astros have expressed interest in acquiring Danny Duffy or Yordano Ventura from the Royals.
MLB Network's Jon Morosi reports that the Royals are "gauging trade interest" in Danny Duffy.
MLB.com's Jeffrey Flanagan reports that the Royals and Danny Duffy have engaged in preliminary talks regarding a contract extension.
Danny Duffy allowed four runs on eight hits over 6 1/3 innings in a no-decision Thursday.
Danny Duffy was clobbered in Friday's loss to the Tigers, surrendering six runs on seven hits in only 3 2/3 innings.
Danny Duffy surrendered three earned runs over seven innings but picked up a win on Sunday.
Danny Duffy allowed three runs over 7 1/3 innings in a no-decision Tuesday against the A's.
Danny Duffy struggled again in Friday's loss to the Tigers, allowing four runs on nine hits over his 5 2/3 innings.
Danny Duffy was clobbered in Saturday's loss to the Red Sox, surrendering seven runs on nine hits over his five frames.
Danny Duffy kept rolling Sunday with 6 2/3 innings of one-run ball against the Twins.
Danny Duffy held the Tigers to one run over 7 2/3 innings in a 6-1 victory Monday.
Danny Duffy held the White Sox to one run while striking out six in a complete game, 2-1 win Thursday.
Danny Duffy limited the Blue Jays to two runs over 6 2/3 innings in a win Saturday.