The Diamondbacks are warming to the idea of trading Dan Haren and “the chances of a trade looking increasingly more likely,” the Arizona Republic reports.

“It would need to be, in our opinion, an A-plus deal,” Diamondbacks CEO Derrick Hall told the paper. “Ideally, what we would ask for is major-league ready pitching, be it starters and/or bullpen, and prospects.”

According to reports, the Yankees, Phillies, Tigers, Twins and Cardinals are interested in the right-hander.