Could Arizona Diamondbacks trade Ketel Marte? Latest news, rumors, speculation, reports and reaction surrounding a deal involving the second baseman.

"The worst-kept secret in the Arizona Diamondbacks organization is out: They will listen to offers on All-Star second baseman Ketel Marte this winter, knowing that while Marte is extremely talented, he can be a diva in the clubhouse, agitating his teammates and coaching staff," Nightengale wrote.

Diamondbacks starter Zac Gallen is 2-0 with a no-decision in August and is pitching better of late, but his ERA is his career-worst.